I have successful compiled the exFAT userspace driver from http://code.google.com/p/exfat/ together with libfuse.
So we are theoretically able to mount every exFAT formatted drive (connected via OTG and also the external sdcard, BUT THIS IS NOT YET FULL TESTED).
This howto is far away from being perfect. Also my english isn't perfect - sorry. Feel free to send me corrections.
@Mods: I think it's a development-related thread. If this is not your mind, please move it to the right section - thank you very much (and also for your continuously work in the "background").
* For updates please have a look in the footer of this post, I forgot to reserve a second "post space" *
Please be very careful! I am not responsible for any damage or lost data on your phone or storage. I have tested this on my phone with a connected card reader and with the "external" sdcard
(Galaxy S2, usually mounted at /sdcard/external_sd).
ATTENTION:
I have discovered one "big" problem that must be solved before all other things and I NEED PERHAPS SOME HELP!
Binaries attached read update no. 2:
After every reboot the exFAT partition will be damaged WITHOUT modification of the vold.fstab config, so don't use a card or drive with important data on it.
This has to do with the automount function of the "New Volume Manager Daemon" Vold.
I suspect that the daemon wants to mount the exFAT volume as FAT32 read/write and overwrites the first bytes of the the first block. I will check this.
It doesn't matter if it's the "external" card or a connected drive/sdcard reader.
The problem:
dd if=/dev/block/mmcblk1p1 of=/sdcard/exfat_ok.bin count=1 bs=1024
hexdump -C /sdcard/exfat_ok.bin
the correct hex:
00000000h: EB 76 90 45 58 46 41 54 20 20 20 (three bytes and then the string EXFAT plus three spaces. This is the recognition string for the exfat-utils (exactly 8 bytes)
dd if=/dev/block/mmcblk1p1 of=/sdcard/exfat_not_ok.bin count=1 bs=1024
hexdump -C /sdcard/exfat_not_ok.bin
after a reboot of the phone the string changes to
00000000h: 52 52 61 41 58 46 41 54 20 20 20 (four new bytes at the beginning -> AXFAT, the recognition of the partition fails) I think no more changes are made.
This is not in relation to the exFAT tools or the FUSE library, the "damage" happens before!
Beside that, the exFAT card seems to be usable and after manually mount to /sdcard/external_sd the card can be activated (under settings - memory) - Sorry I have a german GUI...
STOP READING HERE IF YOU DON'T WANT TO PLAY WITH YOUR DATA ON THE EXFAT PARTITION!
There is no long term experience with this. Don't try it if you don't have some skills with Linux and Android. Make a full backup!
You have been warned...
[Q] Why exFAT and not using ext2/3/4 or any other file system?
[A] I don't know. It's your decision. exFAT is developed mainly for flash memory and could be used "out of the box" with newer windows versions and Mac OS X in contrast to ext2/3/4.
Sadly there is no good extX windows driver out available.
exFAT also supports XDHC card from 32 GB upwards. See http://en.wikipedia.org/wiki/ExFAT for more details.
XDHC cards are reported to work with the SG2.
This makes it interesting for micro sdcards greater than 32 GB (if your are lucky and have one) and for large files (greater than 4 GB), like video files.
Note: FAT32 is of course able to address more than 32 GB, but not "official".
There are many disadvantages as well, read the article.
[Q] Is it free and/or free to use?
[A] Once again, I don't know exactly. Tuxera http://www.tuxera.com/ has an agreement (licence program) with Microsoft and announced an exFAT driver for Android, but I couldn't find a free downloadable (source) package.
The driver is probably free to use but not free to distribute and until now not released.
The exFAT project on Google Project Hosting is licensed under GNU GPL v3, so we will and can use it free. But it's still in beta stage.
[Q] What do I need?
[A] A rooted Android phone with a suitable kernel and fuse support, take siyah (because it a good kernel). I have only a Samsung Galaxy S2, that's because the thread is here.
Enough free memory. Installed busybox. Access via adb shell or a ssh-terminal connection (QuickSSHd or SSHDroid from the market).
An other option is to use a terminal window on the phone.
[Q] What could be possible?
[A]
automatically mount the OTG drive with util-linux-ng or vold or something like that (needs support from kernel or ROM)
replace the FAT32 partition of the "external" sdcard (external_sd) with exFAT (needs support from both kernel and ROM I think)
OK, let's start...
First option, the harder way (you need a linux machine for this): Compiling the driver and utils
Download the CodeSourcery Toolchain/Crosscompiler for ARM EABI for Linux from https://sourcery.mentor.com/sgpp/lite/arm/portal/[email protected]=lite (tested with 2011.03-41, I saw a newer untested version Sourcery G++ Lite 2011.03-42)
Install the compiler on your linux box with (for example) sh ./arm-2011.03-41-arm-none-linux-gnueabi.bin, the installer will asking you a few questions, it should be easy.
Download latest stable fuse (fuse-2.8.6.tar.gz) from http://fuse.sourceforge.net/
Download fuse-exfat (exfat-utils-0.9.5.tar.gz and fuse-exfat-0.9.5.tar.gz) from http://code.google.com/p/exfat/ or use my prepared packages with the Makefiles
Prepare the cross compiler, this is my example script, please change the path (CROSS_PATH) to the CodeSourcery binaries and the CROSS_ROOT path
Make a directory (CROSS_ROOT) for the libraries and the headers, ex.:
/android/src/cross/lib
/android/src/cross/include
---- File prepare_codesourcery.sh
#!/bin/bash
export CROSS_PATH=/android/CodeSourcery
export CROSS_ROOT=/android/src/cross
export ARCH=arm
export PATH="$CROSS_PATH:$PATH"
# version 2011.03-41-arm-none-linux-gnueabi
export CROSS_COMPILE="$CROSS_PATH/bin/arm-none-linux-gnueabi-"
export CFLAGS=' -I$CROSS_ROOT/include -g -O2 -static -march=armv6 -mfpu=neon -mfloat-abi=softfp'
export LDFLAGS=' -L$CROSS_PATH/arm-none-linux-gnueabi/libc/lib -L$CROSS_ROOT/lib -Wl,--whole-archive -lpthread -lrt -ldl -Wl,--no-whole-archive'
export CC="$CROSS_PATH/bin/arm-none-linux-gnueabi-gcc"
----
Export the setup:
. ./prepare_codesourcery.sh
Check the path with
arm-none-linux-gnueabi-gcc -v
Compile libfuse
./configure --host=arm-linux --enable-util --enable-lib --disable-mtab --enable-static=yes --enable-shared=no
make
copy the static libraries libfuse.a and libulockmgr.a from fuse-2.8.6/lib/.libs to $CROSS_ROOT/lib
copy the headers (.h-files) from fuse-2.8.6/include to $CROSS_ROOT/include
c) and d) is not really necessary, but is used for the flags to find the headers and libs, see the file prepare_codesourcery.sh above.
Compile fuse-exfat
I had no luck with SCons (a substitution for make) to cross compile for ARM, so I created some Makefiles to build fuse-exfat and exfat-utils, see attachement
Note: the next step is not necessary, libexfat is also included in exfat-utils if you use the attached source package:
Use your downloaded sources package and copy the Makefiles from my packages to every directory or use my source packages
In fuse-exfat/fuse-exfat-0.9.5 run make
Compile exfat-utils
In fuse-exfat/exfat run make
Note: If you get errors like strip: "Unable to recognise the format of the input file" then you have to symlink arm strip to strip temporary with
ln -s $CROSS_PATH/bin/arm-none-linux-gnueabi-strip $CROSS_PATH/bin/strip
so arm-strip is used instead of strip from your linux dist
Second option: Download the binaries
1.-9. Don't care about it...
Copy all binaries to your phone. They are big but "portable" because of the static build. You can use adb or any other method. The files must be executable, so place them for example in /system/xbin or /data/ and chmod them 755
Connect an empty hard drive, empty pen drive or a card reader with an empty sdcard to the phone with an OTG cable. The drive should only contain a prepared partition (don't care about the file system).
But you can also create a partition with fdisk on the phone, if your busybox installation is useable.
Check the connection of the USB devices with
lsusb
or something like that
Check the partitions with
cat /proc/partitions
You have to see a new partition like sdc1. The partition is visible under /dev/block/platform/s3c_otghcd/sdc1
Create a new exFAT partition with
mkexfatfs /dev/block/platform/s3c_otghcd/sdc1
Check the type of partition with
fdisk -l /dev/block/platform/s3c_otghcd/sdc
(you should see it as "HPFS/NTFS")
Make a new directory ex.
mkdir /data/exfat
for the mount point
Mount the new exFAT partition read/write with
mount.exfat-fuse -o rw /dev/block/platform/s3c_otghcd/sdc1 /data/exfat
to mount point /data/exfat or any other path
or for testing with
mount.exfat-fuse -o ro /dev/block/platform/s3c_otghcd/sdc1 /data/exfat
readonly
To unmount the device use
sync
umount /data/exfat
Thanks to gokhanmoral for his great kernel, tolis626 and olifee (members of this forum) to give me the idea of doing this, unknown devs from http://repository.timesys.com/ for a example Makefile to bypass
the unwieldy "SCons". I wasn't able to use it for cross compiling because of tons of parameters and variables, my shame...
Links:
exFAT (GPL): http://code.google.com/p/exfat/wiki/QuckStartGuide (it's not a typo)
Some informations: http://en.wikipedia.org/wiki/ExFAT
SiyahKernel: http://forum.xda-developers.com/showthread.php?t=1263838
exFAT Makefile: http://repository.timesys.com/buildsources/f/fuse-exfat/fuse-exfat-0.9.5/fuse-exfat-0.9.5-make.patch
CodeSourcery: https://sourcery.mentor.com/sgpp/lite/arm/portal/[email protected]=lite
FUSE (Filesystem in Userspace): http://fuse.sourceforge.net/
Update no. 1 | 01/12/2011
I think I made one step forward: It's vold as I can see.
I have commented out the block for the external_sd in /system/etc/vold.fstab
# external sdcard
#{
# ums_path = /sys/devices/platform/usb_mass_storage/lun1/file
# asec = enable
#}
#dev_mount sdcard1 /mnt/sdcard/external_sd auto /devices/platform/s3c-sdhci.2/mmc_host/mmc1
Now after new rebooting the partition is not damaged and I was able to mount it as expected at /sdcard/external_sd.
The disadvantage is now is that the system cannot recognize the card as a regular sdcard and the memory part in settings is greyed out.
It's like the card is not insert for the ROM, nevertheless the directories are shown in a file explorer like "root explorer" (with free/used values and I could edit a text file with a build-in editor)
Update no. 2 | 05/12/2011
I am now sure after some (more) tests, it's the vold daemon.
To mount a exfat volume, the configuration /system/etc/vold.fstab needs modification.
DO NOT MOUNT A VOLUME WITHOUT MODIFICATION
vold (version 2) is locked to VFAT/FAT32 volumes. Earlier versions had support for ext(2/3/4 ???) volumes too, this was removed by Google and/or Samsung (don't know).
Sadly I can't find a documentation for vold2 and I am stuck here. Because for replacing the "external_sd" from FAT32 to exFAT it's also necessary that vold2 recognizes the card correctly. (Because of the "asec" mounts for Apps2SD).
Perhaps it's possible to map this mounts to the internal sdcard (setting asec = enable in vold.fstab), but I haven't tried this yet.
Conclusion: It's possible to mount such exFAT volume with some restrictions and with modification of the vold.fstab.
Specs:
/data/bin/dumpexfat /dev/block/mmcblk1p1
dumpexfat 0.9.5
Volume label
Volume serial number 0xb965fe93
FS version 1.0
Sector size 512
Cluster size 32768
Sectors count 25173456
Free sectors 25169728
Clusters count 393284
Free clusters 393277
First sector 0
FAT first sector 128
FAT sectors count 3136
First cluster sector 3264
Root directory cluster 5
Volume state 0x0000
FATs count 1
Drive number 0x80
Allocated space 0%
Please no questions about the values, there is a second ext4 partition on the card...
So the configuration in vold.fstab and perhaps some other files have to be changed. I have nearly no knowledge with "void". Is a expert out there?
From command line a short speed test shows this result (no other GUI test possible in the moment):
/data/bin/hdparm -tT /dev/block/mmcblk1p1
/dev/block/mmcblk1p1:
Timing cached reads: 228 MB in 2.01 seconds = 113.27 MB/sec
Timing buffered disk reads: 36 MB in 3.02 seconds = 11.92 MB/sec
Card: Patriot 16 GB Class 10, no OC
RESERVED
Reserved...
Did you test the overhead of a FUSE filesystem on Android? As far I know the performance may be sub-optimal because of the overhead of using a filesystem on userspace mode. The Tuxera driver uses kernel mode and is very optimized, but as far I know it's only for OEM's that want to license the module for their devices.
Anyway, very interesting, mainly because exFAT is the default filesystem for SDXC.
z3r0n3 said:
Did you test the overhead of a FUSE filesystem on Android? As far I know the performance may be sub-optimal because of the overhead of using a filesystem on userspace mode. The Tuxera driver uses kernel mode and is very optimized, but as far I know it's only for OEM's that want to license the module for their devices.
Anyway, very interesting, mainly because exFAT is the default filesystem for SDXC.
Click to expand...
Click to collapse
No, I have not tested this. It will be one of the next steps if there is a solution for the problem I wrote about. In the moment I don't know if it's kernel related, rom/vold related or anything other. But I think it should have less overhead than NTFS in userspace, surely more than FAT32. Please read the comments about speed at http://code.google.com/p/exfat/updates/list And yes, the Tuxera driver is not for us "end users". Perhaps Samsung will give us a present in the next official ROM release
z3r0n3 said:
Did you test the overhead of a FUSE filesystem on Android? As far I know the performance may be sub-optimal because of the overhead of using a filesystem on userspace mode. The Tuxera driver uses kernel mode and is very optimized, but as far I know it's only for OEM's that want to license the module for their devices.
Anyway, very interesting, mainly because exFAT is the default filesystem for SDXC.
Click to expand...
Click to collapse
I also did not test it . However, it should be comparable to a desktop machine (taking the slower CPU into account). My NTFS-3G experience for several years has shown it is actually pretty fast, but takes up a lot of CPU time if high fragmentation is present. Nevertheless, I think the throughput (with our devices CPU) will still be much higher than writing to SD-card in most cases.
And yes, although Linus said FUSE-filesystems are just toys, http://www.spinics.net/lists/linux-fsdevel/msg46078.html, they are very fast and stable toys in my experience.
I think we will not see an open-source kernel-module for exFAT / NTFS-3G in the near future. For one, there is the licensing-issue (which will be much more of a problem if it is included in the kernel-sources / can be built against them), and on the other hand, it always took some YEARS time until a new filesystem was reliable enough to warrant an accepted kernel module. After all, btrfs is just becoming widely accepted and stable after 4 years of development (and a shorter time in-kernel). And this is expected to be the next-gen filesystem for linux, and as such the focus of development. With the correct mount-options, it should also be nice to SD-cards . Maybe there will be some time to try it when kernel 3.1 (with the 'stable' version) comes to our phones.
So for the next years, the FUSE-solution is the best we can get, and for Android, the most compatible one across kernels and devices (it only needs a kernel-dependent kernel-module in addition to whats cooking here, after all). The perfomance graphs by Tuxera on their site even show that their fuse-exFAT is faster than in-kernel FAT, so I guess we should not worry about performance even with the open-source beta implementation. Maybe battery life could be an issue if CPU-usage spikes when copying large files, that might be worth some testing.
I'm personally not switching to exFAT in the near future, but will watch this thread and might do some experiments in some weeks when I have more time .
Thanks for the good work, smitna!
olifee said:
I also did not test it . However, it should be comparable to a desktop machine (taking the slower CPU into account). My NTFS-3G experience for several years has shown it is actually pretty fast, but takes up a lot of CPU time if high fragmentation is present. Nevertheless, I think the throughput (with our devices CPU) will still be much higher than writing to SD-card in most cases.
And yes, although Linus said FUSE-filesystems are just toys, http://www.spinics.net/lists/linux-fsdevel/msg46078.html, they are very fast and stable toys in my experience.
I think we will not see an open-source kernel-module for exFAT / NTFS-3G in the near future. For one, there is the licensing-issue (which will be much more of a problem if it is included in the kernel-sources / can be built against them), and on the other hand, it always took some YEARS time until a new filesystem was reliable enough to warrant an accepted kernel module. After all, btrfs is just becoming widely accepted and stable after 4 years of development (and a shorter time in-kernel). And this is expected to be the next-gen filesystem for linux, and as such the focus of development. With the correct mount-options, it should also be nice to SD-cards . Maybe there will be some time to try it when kernel 3.1 (with the 'stable' version) comes to our phones.
So for the next years, the FUSE-solution is the best we can get, and for Android, the most compatible one across kernels and devices (it only needs a kernel-dependent kernel-module in addition to whats cooking here, after all). The perfomance graphs by Tuxera on their site even show that their fuse-exFAT is faster than in-kernel FAT, so I guess we should not worry about performance even with the open-source beta implementation. Maybe battery life could be an issue if CPU-usage spikes when copying large files, that might be worth some testing.
I'm personally not switching to exFAT in the near future, but will watch this thread and might do some experiments in some weeks when I have more time .
Thanks for the good work, smitna!
Click to expand...
Click to collapse
I have some bad experiences with NTFS-3g on my netbook. Trying to transfer a large number of files from my netbook (running Arch Linux) to my external HDD (that is NTFS) and the transfer was slow and my CPU time are always on 100%. That's why I asked if it was tested, because I don't really know if FUSE is suitable for embedded devices. But yeah, the only way to know is to test, and it's still too early for that .
But licensing is really a issue? I know that Linux have module to read a NTFS partition (but not write, this is why we have NTFS-3g) and there was some work for a read-only module for exFAT too (sadly, it didn't get much attention).
Anyway, I'm not switching for exFAT too anyway and I don't know how they aprove exFAT as the default filesystem on SDXC cards, but it's important anyway and will be critical somewhere in the future to have support to this filesystem.
First of all, thanks for your work on this. I was shocked to discover that my SGS2 wouldn't support any filesystems that support large files on external sdcards. I was able to get your solution working in the sense that I could format an sdcard with exfat, mount it, write to it, and unmount it. Awesome! I am having one serious problem though: After editing the vold.fstab and rebooting, I get constant FCs after trying to install any APKs. It doesn't matter if I have my external_sd mounted or not. And these are not apps that are trying to install to the sdcard. Any ideas?
I've got the AT&T version of the SGS2 (i777), but I'm running Siyah's latest kernel. The FCs just say it's the media process.
dildano said:
First of all, thanks for your work on this. I was shocked to discover that my SGS2 wouldn't support any filesystems that support large files on external sdcards. I was able to get your solution working in the sense that I could format an sdcard with exfat, mount it, write to it, and unmount it. Awesome! I am having one serious problem though: After editing the vold.fstab and rebooting, I get constant FCs after trying to install any APKs. It doesn't matter if I have my external_sd mounted or not. And these are not apps that are trying to install to the sdcard. Any ideas?
I've got the AT&T version of the SGS2 (i777), but I'm running Siyah's latest kernel. The FCs just say it's the media process.
Click to expand...
Click to collapse
Sorry for my later answer!
This should be nevertheless a problem with the app2sd service and I have no solution for this. My thread here is only a howto, nothing for the "daily to use"...
I also don't know why there is no other selectable alternative file system for "us users" to use for the external card by default and not FAT32.
The media service depends on the vold daemon to my knowledge. So I cannot recomment this for the default external sdcard, because of the media service scans. If you want to store larger files (e.g. video files), you should better split your sdcard in one FAT32 partition and an additional ext2/3/4 partition. On this partition there is no 4 GB limit. The "media scanner" will not scan the files (videos etc.) on the partition, but you can choose the videos from your favorite player with the file chooser.
Hope this helps you a little bit.
Thanks for the response. I was actually trying out multiple partitions over the weekend to no avail. Granted, I was trying a combination of FAT32 and NTFS. It would actually work for a while until the NTFS partition would appear to get corrupted. I thought about ext2, but my understanding is that Samsung somehow disabled ext* support for external SD cards. Is that not the case? Anyway, I'm surprised that more folks haven't caught onto your work here because storing large files seems to be a fairly common issue for SGS2 users.
dildano said:
Thanks for the response. I was actually trying out multiple partitions over the weekend to no avail. Granted, I was trying a combination of FAT32 and NTFS. It would actually work for a while until the NTFS partition would appear to get corrupted. I thought about ext2, but my understanding is that Samsung somehow disabled ext* support for external SD cards. Is that not the case? Anyway, I'm surprised that more folks haven't caught onto your work here because storing large files seems to be a fairly common issue for SGS2 users.
Click to expand...
Click to collapse
I am using an ext3 partition with deactivated journalling and noatime option on the sdcard since months without problems. Of course I have also a FAT32 partition on the card to stay compatible with vold and media scanner. With a start script it is mounted after every phone restart.
OK, I must have misunderstood. So is it just that vold will not allow us to automatically mount ext* partitions? I'll try it with a script as soon as I can get some time. Thanks.
I would like to try this, for use connecting my camera which has a exfat formatted sdxc card in it via OTG. But have a couple questions since I can't test at this moment.
1: Do the binaries work on a ICS build (Siyah Kernel) or do they need updated?
2: Do I have to make any vold.fstab changes to prevent FS damage when using a OTG cable or is that just external sd?
3: If I have to make the changes will other devices (not memory) work normal without manual interaction?
shadowofdarkness said:
I would like to try this, for use connecting my camera which has a exfat formatted sdxc card in it via OTG. But have a couple questions since I can't test at this moment.
1: Do the binaries work on a ICS build (Siyah Kernel) or do they need updated?
2: Do I have to make any vold.fstab changes to prevent FS damage when using a OTG cable or is that just external sd?
3: If I have to make the changes will other devices (not memory) work normal without manual interaction?
Click to expand...
Click to collapse
Hello, I am still on GB, but I guess it should work on ICS too.
If ICS (or better the vold daemon) has not changed its behavior you have to modify vold.fstab to prevent damages. To do this, you have to disable automounting the exfat OTG device (commenting out the part for OTG and reboot). The other partitions (internal and external memory should work like before). Then mount your camera card manually. But be very careful with your data/pictures!
Hello, I'm working on an HTC Mazaa with Windows Phone and inside a partition I've found several times the EXFAT header, so I'm trying to mount it, but looks like it's EXFAT 2.0, while your implementation covers only 1.0.
Do you know if it's somehow possible to mount EXFAT 2.0? On Windows, on Linux, modifying your tool, whatever!
Here's the header:
Code:
012f7400 eb 76 90 45 58 46 41 54 20 20 20 00 00 00 00 00 |.v.EXFAT .....|
012f7410 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
012f7440 00 00 00 00 00 00 00 00 00 1b 00 00 00 00 00 00 |................|
012f7450 20 00 00 00 36 00 00 00 8c 00 00 00 74 1a 00 00 | ...6.......t...|
012f7460 02 00 00 00 94 01 eb 07 00 02 10 00 09 00 02 80 |................|
012f7470 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
012f7480 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
012f75f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|
012f7600 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
012f77f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|
012f7800
Thanks!
WhiteTrap said:
Hello, I'm working on an HTC Mazaa with Windows Phone and inside a partition I've found several times the EXFAT header, so I'm trying to mount it, but looks like it's EXFAT 2.0, while your implementation covers only 1.0.
Do you know if it's somehow possible to mount EXFAT 2.0? On Windows, on Linux, modifying your tool, whatever!
Here's the header:
Code:
012f7400 eb 76 90 45 58 46 41 54 20 20 20 00 00 00 00 00 |.v.EXFAT .....|
012f7410 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
012f7440 00 00 00 00 00 00 00 00 00 1b 00 00 00 00 00 00 |................|
012f7450 20 00 00 00 36 00 00 00 8c 00 00 00 74 1a 00 00 | ...6.......t...|
012f7460 02 00 00 00 94 01 eb 07 00 02 10 00 09 00 02 80 |................|
012f7470 ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
012f7480 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
012f75f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|
012f7600 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
012f77f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|
012f7800
Thanks!
Click to expand...
Click to collapse
I don't think that I can give you a good answer, sorry. It's not my tool, it's the exFAT driver from http://code.google.com/p/exfat/, the latest is fuse-exfat-0.9.7.tar.gz and I don't see any notes for a "version 2" in the ChangeLog. Are you really sure about the version? If there is a version 2, I guess it's more than only a change to the header.
I recommend you to post the question in the mailing list https://groups.google.com/group/exfat?hl=en. It is rumored that exFAT works natively on the new S3, but I don't know if this will be true and I have strong doubts that Samsung will release the sources of the driver.
smitna said:
I don't think that I can give you a good answer, sorry. It's not my tool, it's the exFAT driver from http://code.google.com/p/exfat/, the latest is fuse-exfat-0.9.7.tar.gz and I don't see any notes for a "version 2" in the ChangeLog. Are you really sure about the version? If there is a version 2, I guess it's more than only a change to the header.
I recommend you to post the question in the mailing list https://groups.google.com/group/exfat?hl=en. It is rumored that exFAT works natively on the new S3, but I don't know if this will be true and I have strong doubts that Samsung will release the sources of the driver.
Click to expand...
Click to collapse
It's fuse-exfat itself that says the version is 2.0. I'll try on the ML, but looks like there are big differences. If I make fuse-exfat ignore the fact that it's 2.0 it says that there are 2 FAT, which I think non-banal modifications to the implementation.
Thanks!
Seems that exFAT 2.0 is (or is very similar to) TexFAT.
I just wanted to say thanks I just tested this and the binaries works great on ICS 4.0.3 (LPG) using Siyah Kernel.
I plugged in my Panasonic Lumix TS2 digital camera with a 64GB sdxc card and was able to mount it fine on my S II with a OTG cable.
shadowofdarkness said:
I just wanted to say thanks I just tested this and the binaries works great on ICS 4.0.3 (LPG) using Siyah Kernel.
I plugged in my Panasonic Lumix TS2 digital camera with a 64GB sdxc card and was able to mount it fine on my S II with a OTG cable.
Click to expand...
Click to collapse
Fine and thanks for sharing your experience! It's good to hear that the driver is useful for you.
I have galaxy s3 and the 64 gb exfat formatted card works on the stock rom of it.
But when i switch to custom rom which are not based on galaxy s3 own stock rom the card stops working.
No other rom beside galaxy s3's own come with exfat driver. so i was wondering if i use this in custom rom as for now its Cyanogenmod 10, would this mod of yours work?
please let me know.
thanks.
Related
Hello everyone.
With the development of the New ROM, I decided to describe this and that.
-How to Prepare files and packages.
-How to create stable SYS and OEM.
-XIP Porting (Kernel) - if it succeeds.
-Build/Mod. BLDR/BOOT Section
-Change PagePool
-Etc
Small introduction:
Subject shows the structure of folding and unfolding ROM.
Everything described here are doing at your own risk.
I do not answer with any damage to the device.
Please read carefully and proceed with caution.
Topic applies only Toshiba devices Tsunagi: TG01
Execute Image System:
This step tutorial will be further developed.
Once, I'll add this feature in my kitchen.
Add OEM Apps:
OEM - This package is derived from the *. cab file.
It must include:
- The *. dsm guid the value of the name,
- The *. RGU with the same value in the name, it must be in Unicode encoding.
It must also be free, the last line in the content of the text.
- Application *. exe, *. dll, or library
- A shortcut to the program / library - if it is needed. It is not mandatory.
- Content may be more developed (in the files / programs)
Such a package can be easily added to the root of the OEM.
If, of course, is properly filed
Dependence of the Application, the memory devices.:
How can you distinguish the memory which will hit your application / library?
This differs from the rule:
- Module - that is, a file that looks like a directory goes to RAM.
- File - normal-looking, *. exe or *. dll file, going to Storage memory
Porting XIP (Kernel) and insert this file to Image System:
[TUT][UTIL]Remote Porting XIP
Working good in my kitchen for Toshiba TG01
XPR to LZX Compression:
Open the file os.nb.payload in HEX Editor. Find this Lines:
Code:
F8 AC 2C 9D E3 D4 2B 4D BD 30 91 6E D8 4F 31 DC ř¬,ťăÔ+M˝0‘nŘO1Ü
01 00 00 00 01 00 00 00 01 00 00 00 34 00 00 00 ............4...
08 00 00 00 00 02 00 00 00 10 00 00 58 50 52 00 ............XPR.
And change to:
Code:
F8 AC 2C 9D E3 D4 2B 4D BD 30 91 6E D8 4F 31 DC ř¬,ťăÔ+M˝0‘nŘO1Ü
01 00 00 00 01 00 00 00 01 00 00 00 34 00 00 00 ............4...
08 00 00 00 00 02 00 00 00 10 00 00 58 50 52 00 ............LZX.
Save this file. Get this library -> cecompr_nt.dll, then insert to TOOLS folder from your Kitchen ROM.
Download cecompr.dll and overwrite it in your XIP. Build XIP, build ROM, see results. Now Image System takes less memory.
Small Support
Changes PagePool:
Use PagePool Changer
Porting/build BLDR/BOOT and insert this file to Image System:
[UTIL][UPG] buildbldr
Build Image System:
This function, have a my Kitchen.
Ultra Kitchen Edition - ROM Builder for Toshiba TG01
Modyfications SYS Directory
Remove TimeBomb:
Open file *.rgu from location ->SYS/Shell/, and remove two keys from this registry:
Code:
[HKEY_LOCAL_MACHINE\Software\Microsoft\Shell\DeviceBeta]
"Today"="Beta"
"Expiry"="Expires: %02d/%02d/%04d"
[HKEY_LOCAL_MACHINE\Software\Microsoft\Shell\DeviceBeta]
"About"="- BETA"
Now, Go to location -> SYS/Shell/, open file form module shell32.exe/S000 in HexEditor.
Search string 02 EB 7D 3E, and in both instances 7D change to BB.
from:
Code:
02 EB 7D 3E
to:
Code:
02 EB BB 3E
Remember, this sequence occurs twice
Thanks for Camelio
good idea, may be i'll try to understand something and build an italian version too, even if we are quit lucky with our tg01 'cause it's no brand at all.
Thanks for your great job with developement
Hey Nokser do you create wm6.1 rom for tg01?
Nokserze can you writa Polish version too?
here or in pdaclub forum, but I wont to understand anything, so it's more simple in our's language
Thanks for your job
Yes, of course
When you will to make this tourial? or you can write the tourial for stabil oem's now I want to make a rom but i can't create a stabil oem or a oem that's works... or you can tell me how i must put the oem.
Greats ALcAtRas
I give all my work in this, but first I must port WM6.5.5
Nokser, could we use the information you have gained about our device to port android?
Wm first, then we'll see Android
Nokser said:
Wm first, then we'll see Android
Click to expand...
Click to collapse
You think that is posible?There are a lot of people ho want that.
Everything is possible, but we shall see
Is this guide close to completion or has this been forgotten about?
I not forget.... I must gen. all options build structure ROM
Nokser said:
I not forget.... I must gen. all options build structure ROM
Click to expand...
Click to collapse
MAny of us are waiting for your light...
I know My friend
Small Update Thread
Nokser said:
Small Update Thread
Click to expand...
Click to collapse
Very good: I'm waiting for the next update impatiently. Do you know a good general tutorial, not device specific?
super_sonic said:
Very good: I'm waiting for the next update impatiently. Do you know a good general tutorial, not device specific?
Click to expand...
Click to collapse
You'll see ... if i end this tutorial
@Nokser:Can you help us to unlock t01a .It likes tg01 but it don't have code for unlocking .
Please...
Hello all,
I installed the CONROMv6 on my Verizon HTC Rezound. Everything went fine except that I was not able to receive SMS. Somewhere in google I found a solution: write some NV_stuff using cdmaware; didnt work. I also found in some HTC forum a kind of update that some HTC developer posted, I installed but didnt work either. Without finding a solution, I sitted my phone for a couple of days while taking care of my biz.
When I took my phone again, I realized that all the CDMA setting were gone. I tried to re-program the phone using QPST 2.7 366, but everytime I try to write to the phone, I receive an error saying "Roaming list file contains no data". I even tried to write some values at the time, but I keep receiving the same error or "NV_ACCOLC_I(0) NV_READONLY_S". I also tried to use CDMA Workshop to write the PRL file and even when it says it succeded, keep saying there is not PRL.
I cannot find the information about the solutions I tried for the SMS problem, and I am not sure about when the problem appeared, but I think I messed up with the NV stuff and i have not idea about how to fix it. Can anyone point me in the right direction? Does anyone have an NV backup that I can use for my phone?.
If you are S-OFF it is probably best to run the RUU for 4.3.605.2 and bring the phone back to stock, at least to get it working... Most of that stuff you were messing with is just bad news for 4G phones.
acejavelin said:
If you are S-OFF it is probably best to run the RUU for 4.3.605.2 and bring the phone back to stock, at least to get it working... Most of that stuff you were messing with is just bad news for 4G phones.
Click to expand...
Click to collapse
Thank you for your answer. I already flashed back to stock, but I guess that the NV_items are not modified by any ROM. Anyways, I am downloading the RUU you sugested to give it a try; will let you know.
acejavelin said:
If you are S-OFF it is probably best to run the RUU for 4.3.605.2 and bring the phone back to stock, at least to get it working... Most of that stuff you were messing with is just bad news for 4G phones.
Click to expand...
Click to collapse
Already tried with no avail. I flashed the latest RUU and did a factory reset after that, but still having the same problem. Any other ideas?
PortOS_76 said:
Already tried with no avail. I flashed the latest RUU and did a factory reset after that, but still having the same problem. Any other ideas?
Click to expand...
Click to collapse
switch the phone to cdma only. boot into recovery and wipe dalvik:
dial *22899
a popup should appear, then turn your 4g back on and test please.
synisterwolf said:
switch the phone to cdma only. boot into recovery and wipe dalvik:
dial *22899
a popup should appear, then turn your 4g back on and test please.
Click to expand...
Click to collapse
I followed your directions, but no popup appeared dialing *22899. Is there another way to turn the 4g back on?.
PortOS_76 said:
I followed your directions, but no popup appeared dialing *22899. Is there another way to turn the 4g back on?.
Click to expand...
Click to collapse
just turn it back on via the menu in mobile network
synisterwolf said:
just turn it back on via the menu in mobile network
Click to expand...
Click to collapse
I already did, but same problem, I cannot change the CDMA settings.
Found it! The file I wrote to my Rezound is the NV_Thunderbolt_Verizon.txt. Yes! I know this is a file for the Thunderbolt, but I dont know what I was thinking in that moment. The point is, can someone tell me if this is the source of the problem and what was the original values for this NV_Item?. The file content is the next:
[NV Items]
[Complete items - 1]
0855 (0x0357) - OK
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Also found the hotfix I used. Im afraid this is a hotfix for the Incredible, again the wrong device. Well, the hot fix is:
http://dl3.htc.com/misc/inc8049.apk
Any ideas?.
Well, let see.
You used CONROM on top of the latest ICS RUU leak? Con stopped supporting his ROM and it is not made for the latest ICS RUU leak.
You installed Thunderbolt and Incredible nvRam files on a Rezound phone?
You think installing things either not meant for your phone or not meant for your version of the operating system RUU were good ideas to try?
You installed something without researching first how to un-do it?
acejavelin: Yes, I used to think an RUU and factory reset will put everything back to normal. But, when I played with a T-Mobile SIM card (with 4.03.605.2) and ended up with a messed up Verizon APN, I discovered that the APN is stored in some unknown location where even an RUU and factory reset will not touch. I did manage to fix the Verizon APN problem. It is possible to really screw a phone up to the point that RUU will not fix it.
Anyway, I do hope someone has a solution to your phone's problems. I hope you realize now that installing things not meant for your phone or your version of the operating system is not a great idea. In the future, start with your phone on an RUU that the ROM is intended for, make a nandroid backup before installling the ROM, and if you don't like the ROM, then restore the nandroid backup to go back to stock.
Start with completely stock system - so everything matches and works together right.
Only install customized things that are meant for your phone and your version of the operating system RUU.
If you aren't sure, ask the author of whatever you are considering installing.
Think about: Do I really want and need what I am about to install? How risky is it? How will I be able to uninstall/undo it?
I don't intend this post to make you feel bad, it is more to make everyone else think a little.
P.S. You might try the LTE ON OFF app or HZUtils app to enter the hidden 4636 menu and select "CDMA+LTE/EvDo auto". But I wouldn't go experimenting as there are many options in hidden menus I do not understand. HZutils also has the ##778# hidden menu. You can also just dial ##778# to bring up the EPST menu with code 000000, but I wouldn't go changing things unless one understands it. Maybe you can compare your EPST values with those in someone's working Rezound phone. Then with a list of what the values are in a working phone, along with the list of what is stored in YOUR phone, you can cautiously change the EPST values in your phone?
The EPST hidden menu does have a submenu called PRL, so maybe this is something for you to investigate.
I know that I did something stupid by installing things that were not meant for my phone. Good news, I learned my lesson. About the solutions you proposed:
I cannot enter some of the hidden menus like ##4636#, however I was able to enter that menu using the tweaks app included in the ROM.
I also tried to enter to the ##778# menu, fortunatelly is working and i know how to modify every parameter in it. Unfortunatelly I cannot modify any of the options in the NAM Settings nor the PRL menus; they appear like in the View Mode.
Seems like all the NAM settings and PRL options are read only, how can this happened?.
I am out on a ledge, talking about PRL because I am not very knowledgeable about it.
I think PRL is updated by *228 for older phones and for the rezound it is via the SIM card.
http://www.verizonwireless.com/care/popups/prl.html
When the phone goes through a sim card activation, I think you get the PRL information into the phone.
Go to a Verizon store and talk them into giving you a replacement SIM card.
Maybe it dropped into the grass while changing your battery?
See if a new SIM card will set things right. Maybe also do a factory reset. If a new SIM card doesn't help, well it didn't cost you anything.
I already tried the *228 and nothing happens. As there is no PRL in the phone, it has no service, therefore, it cannot connect anywhere to update any data. About the Verizon simcard, the phone is not activated in Verizon, so I cannot ask for help from them.
I think the funny thing here is that all the NAM information is read only, while this must be writable in order to set the user information.
Have you tried writing the PRL with and without the SIM card installed? You could try using DFS to write some of your NV data too. I used workshop, Qpst, and DFS to program my Rezound on PagePlus.
I installed ConRom also and the stock RUU and only had to re-program the PRL, just so you know that the other settings shouldn't change after you get it going again. Cheers
Nam setting became write only
Looking for a solution to my problem I found this thread in which someone with a Droid has the same issues as me. I cannot use this solution as that folder is not present in my Rezound (this may be present only in Droids I guess). Any sugestions that may help me to write my NAM/PRL settings?
http://forum.xda-developers.com/showthread.php?t=651475
ckuke4 said:
Have you tried writing the PRL with and without the SIM card installed? You could try using DFS to write some of your NV data too. I used workshop, Qpst, and DFS to program my Rezound on PagePlus.
I installed ConRom also and the stock RUU and only had to re-program the PRL, just so you know that the other settings shouldn't change after you get it going again. Cheers
Click to expand...
Click to collapse
I already tried all of these programs, but, even when CDMA WS and DFS says that succeded to write the parameters, there is not cange on them.
PortOS_76 said:
Looking for a solution to my problem I found this thread in which someone with a Droid has the same issues as me. I cannot use this solution as that folder is not present in my Rezound (this may be present only in Droids I guess). Any sugestions that may help me to write my NAM/PRL settings?
http://forum.xda-developers.com/showthread.php?t=651475
Click to expand...
Click to collapse
The suggested solution was to remount the system partition as writable. ES File Explorer app can do that for you if you have root.
Also, that thread shows no feedback whether the proposed solution helped.
HowardZ said:
The suggested solution was to remount the system partition as writable. ES File Explorer app can do that for you if you have root.
Also, that thread shows no feedback whether the proposed solution helped.
Click to expand...
Click to collapse
That is why I would like to try to see if works, but I dont know how to remount the system partition in a Rezound (there is no mtdblock3 folder). Someone willing to give some help?
From terminal emulator app
su
mount -o remount,rw /dev/block/system /system
Be careful because until you remount it readonly or reboot your are capable of modifying or deleting important system files.
Hi
I just changed some stuff like images in a kernel using Android Kernel Kitchen 0.3.1.
Now I wanna test my changes.
My questions is->
What are worst case scenarios possible?
I am ready to go for boot loops and etc. but are there any consequences that may cause real hard brick of my phone? (Like---> it will never start again! or you need to take it to service center for repair!)?
Jaskaran498 said:
Hi
I just changed some stuff like images in a kernel using Android Kernel Kitchen 0.3.1.
Now I wanna test my changes.
My questions is->
What are worst case scenarios possible?
I am ready to go for boot loops and etc. but are there any consequences that may cause real hard brick of my phone? (Like---> it will never start again! or you need to take it to service center for repair!)?
Click to expand...
Click to collapse
What you can expect are boot loops, inability to get even see the boot splash, non-working wifi/ USB / touch / camera/ anything that needs a driver, random reboots. Personal experience: yesterday I was playing with changing part of the initramfs without changing the whole boot.img. It turns out that I needed to update the header size and checksum. Without this, it would hang for some seconds and then reboot (or not start at all). This was all fixable from recovery.
What can happen if you are not careful is a brick because you flash the wrong partition. Otherwise, you can always enter recovery mode and flash the kernel (for the i9300, it is mmcblk0p5). If you are not sure, look for the magic ANDROID! header:
Code:
# dd bs=64 count=1 if=/dev/block/mmcblk0p5 2>/dev/null | hexdump -C
00000000 41 4e 44 52 4f 49 44 21 80 bc 44 00 00 80 00 40 |[email protected]|
00000010 2e 1e 05 00 00 00 00 41 00 00 00 00 00 00 f0 40 |[email protected]|
00000020 00 01 00 40 00 08 00 00 00 00 00 00 00 00 00 00 |[email protected]|
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040
So, the absolute worst-case scenario is when you accidentally flash the wrong partition. If you picked your EFS partition and do not have a backup, then your IMEI and stuff are gone.
Note: be sure not to wipe your recovery partition (mmcblk0p6), that requires you restore the recovery using download mode (I have not experienced this yet).
Lekensteyn said:
What you can expect are boot loops, inability to get even see the boot splash, non-working wifi/ USB / touch / camera/ anything that needs a driver, random reboots. Personal experience: yesterday I was playing with changing part of the initramfs without changing the whole boot.img. It turns out that I needed to update the header size and checksum. Without this, it would hang for some seconds and then reboot (or not start at all). This was all fixable from recovery.
What can happen if you are not careful is a brick because you flash the wrong partition. Otherwise, you can always enter recovery mode and flash the kernel (for the i9300, it is mmcblk0p5). If you are not sure, look for the magic ANDROID! header:
Code:
# dd bs=64 count=1 if=/dev/block/mmcblk0p5 2>/dev/null | hexdump -C
00000000 41 4e 44 52 4f 49 44 21 80 bc 44 00 00 80 00 40 |[email protected]|
00000010 2e 1e 05 00 00 00 00 41 00 00 00 00 00 00 f0 40 |[email protected]|
00000020 00 01 00 40 00 08 00 00 00 00 00 00 00 00 00 00 |[email protected]|
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000040
So, the absolute worst-case scenario is when you accidentally flash the wrong partition. If you picked your EFS partition and do not have a backup, then your IMEI and stuff are gone.
Note: be sure not to wipe your recovery partition (mmcblk0p6), that requires you restore the recovery using download mode (I have not experienced this yet).
Click to expand...
Click to collapse
Kk, thanks.
But what do i do if it does not start at all like u said (what i want is that it should at least be able start in recovery or download if possible).
Since its my first time messing with kernel, i am total n00b then
If it cannot proceed to the "normal" boot, then get into recovery by holding Volume Up + Power + Home for ten seconds while booting (I usually do that when I see the Samsung logo end release when it has restarted, showing the logo again (about ten seconds).
From there, use Install from zip (if you have a "update zip" that contains boot.img and some metadata) or (what I do) use adb push to put the image in /tmp/. Then use dd to write the boot image. Example (I use Linux):
Code:
laptop$ adb push boot-new.img /tmp/boot.img
laptop$ adb shell
# cat /tmp/boot.img > /dev/block/mmcblk0p5
Just in case of hardware failure, I also verify the md5sum:
Code:
laptop$ md5sum boot-new.img
laptop$ du -b boot-new.img # determine file size, say 1234
(android) # dd if=/dev/block/mmcblk0p5 bs=1234 count=1 | md5sum
The two outputs must match, otherwise something went wrong (unlikely, but still).
Lekensteyn said:
If it cannot proceed to the "normal" boot, then get into recovery by holding Volume Up + Power + Home for ten seconds while booting (I usually do that when I see the Samsung logo end release when it has restarted, showing the logo again (about ten seconds).
From there, use Install from zip (if you have a "update zip" that contains boot.img and some metadata) or (what I do) use adb push to put the image in /tmp/. Then use dd to write the boot image. Example (I use Linux):
Code:
laptop$ adb push boot-new.img /tmp/boot.img
laptop$ adb shell
# cat /tmp/boot.img > /dev/block/mmcblk0p5
Just in case of hardware failure, I also verify the md5sum:
Code:
laptop$ md5sum boot-new.img
laptop$ du -b boot-new.img # determine file size, say 1234
(android) # dd if=/dev/block/mmcblk0p5 bs=1234 count=1 | md5sum
The two outputs must match, otherwise something went wrong (unlikely, but still).
Click to expand...
Click to collapse
I know all this but what i m saying is that can there be conditions where neither i will be able to boot recovery nor download (even by volume+power+home method)?
Unless you do really stupid things like overwriting /dev/block/mmcblk0 or other partitions on http://cleanimport.xda/index.php?threads/2362743/, you will be safe.
Jaskaran498 said:
I know all this but what i m saying is that can there be conditions where neither i will be able to boot recovery nor download (even by volume+power+home method)?
Click to expand...
Click to collapse
Recovery has it's own kernel. It doesn't use the one you're modifying
-----------------------
Sent via tapatalk.
I do NOT reply to support queries over PM. Please keep support queries to the Q&A section, so that others may benefit
Scroll down for recent updates;
Has anyone ever heard more from h311sdr0id about his post (see here) to get more info about this "state" that allows you to flash MDK over ME7 in Odin? I'm curious to see if we can use that state, maybe in QDL mode to somehow either push an image to the phone or communicate with it using some methods/commands that E:V:A refers to on this page and a few pages after and before. It's also possible that we then might be able to use a modified unbrick.img (see here) to restore an MDK bootloader. So far those are the two ideas that I think have the best chance.
Also in this thread I started with the intention of compiling the entire stock firmware for the Dev edition (OYUAMDK), I mentioned at the bottom that when flashing the stock MDK restore Odin tar on an ME7 phone users usually get a "SW REV. CHECK FAIL: FUSED: 3, Binary: 1" message meaning that your current fuse counter in aboot is set to 3 but the binary your attempting to flash is set to 1 so the flashing attempt will fail and I'm willing to bet if you're on VRUDMI1 and you attempt to flash the MDK restore you will get a similar message but the FUSED: value will be set to 4, you can see the counter upped in this post from jeboo here. However, with flashing the dev OYUAMDK aboot file on S4's with a ME7 bootloader users will receive a "SECURE CHECK FAIL: aboot" message instead, I don't know if we might be able to use dev OYUAMDK aboot file and bypass the fused counter entirely, since the dev edition has an unlocked bootloader and the fuse is an efuse, so software enforced, not a hardware enforced qfuse. If anyone wants to go into more detail, or wants to expand on these ideas we I can expand on this info or we can collaborate ideas in the Dev discussion thread.
Other points to consider:
If you know how to use IDA pro, and can help with the base address of the binaries, that is probably our best bet to find a vulnerability in aboot, you can see jeboo and djrbliss discuss this a bit (here) and you can see Ralekdev show his findings here, also this gives the explanation of why you see the "custom unlock" boot screen that people constantly post about in the Q&A thread. Both of these threads along with djrbliss' blog discussing the S4 aboot vulnerability that lead to Loki (here), and exploiting the TrustZone (tz.mbn) on Moto's bootloaders (here) are good starting points in trying to find a new vulnerability.
If you know how to hexedit, then hexedit aboot.mbn from MDK, ME7, OYUAMDK, and MI1. You can see ME7 and MI1 are similar in both size and content, while MDK and OYUAMDK are more similar to each other in size and content. Obviously OYUAMDK differs from the others in the way it checks the recovery and boot partitions, (in djrbliss' blog on the S4 exploit he says "This bootloader differs between "locked" and "unlocked" variants of the Galaxy S4 in its enforcement of signature checks on the boot and recovery partitions.") but we are able to flash all bootloader partitions from the OYUAMDK firmware restore Odin file I made except aboot, so if you have any ideas on how we might be able to exploit any of that, please feel free to share.
If you do hexedit a dd'ed partition (if you copy mmcblk0p6 from your phone to your pc) you will see that its padded with zeroes at the end. You have to cut the padded zeros from the dd'ed image in order for the partition to be registered as a signed partition in Odin, etc. To do this, use Linux, open a terminal and type
Code:
sudo apt-get install hexedit
then enter your password and hit enter. Then go to the folder that contains the partitions you want to hexedit (for instance type cd /home/Your user name folder/Desktop/S4partitionbackups/" where "your user name folder" is whatever your username is and "S4partitionbackups" is a folder you create on your desktop containing a backup of your partitions) If you don't have a back up of your partitions you can create them using something like the command below, substituting mmcblk0p6 and aboot.mbn with the partition(s) you are interested in.
Code:
adb shell su -c 'dd if=/dev/block/mmcblk0p6 of=/sdcard/backup/aboot.mbn'
then
Code:
adb pull /sdcard/backup/aboot.mbn /home/Your user name folder/Desktop/S4partitionbackups/
then
Code:
cd /home/Your user name folder/Desktop/S4partitionbackups/
Code:
hexedit aboot.mbn
Quick guide on Hexedit controls/keys
shift+> will take you to the end of the hex file
shift+< will take you to the beginning
page up/page down it will take you up a page and down a page respectively
ctrl+c you will exit the hex file without saving any changes
esc+t you will truncate the file at the current location
ctrl+x you will save the file with all changes you have done.
This is an example of a padded aboot.mbn, before hexediting, and prior to truncating the file a at the first "0" in the string "00 01" found between the end of the actual file and the padded zero's and repeating F's
View attachment 2353922
This is an example of a properly signed aboot.mbn after hexediting
View attachment 2353923
How to find start addresses
First you have to open the selected bootloader with a hex file editor and look at the header, converting for little endian you can find the start addresses and offsets
Code:
[B]sbl1.mbn = 0x2a000000[/B]
00000000 D1 DC 4B 84 34 10 D7 73 15 00 00 00 FF FF FF FF ..K.4..s........
00000010 FF FF FF FF 50 00 00 00 [COLOR=Red]00 00 00 2A[/COLOR] 40 72 01 00 ....P......*@r..
00000020 40 41 01 00 40 41 01 2A 00 01 00 00 40 42 01 2A @[email protected]*[email protected]*
00000030 00 30 00 00 01 00 00 00 04 00 00 00 FF FF FF FF .0..............
[B] sbl2.mbn = 0x2e000000[/B]
00000000 16 00 00 00 03 00 00 00 00 00 00 00 [COLOR=Red]00 00 00 2E[/COLOR] ................
00000010 40 51 02 00 40 20 02 00 40 20 02 2E 00 01 00 00 @[email protected] [email protected] ......
00000020 40 21 02 2E 00 30 00 00 12 00 00 EA 5F 00 00 EA @!...0......_...
00000030 62 00 00 EA 65 00 00 EA 68 00 00 EA 6B 00 00 EA b...e...h...k...
[B] sbl3.mbn = 0x8ff00000[/B]
00000000 18 00 00 00 03 00 00 00 00 00 00 00 [COLOR=Red]00 00 F0 8F[/COLOR] ................
00000010 20 20 04 00 20 EF 03 00 20 EF F3 8F 00 01 00 00 .. ... .......
00000020 20 F0 F3 8F 00 30 00 00 D3 F0 21 E3 D3 F0 21 E3 ....0....!...!.
00000030 00 70 A0 E1 09 02 A0 E3 00 D0 A0 E1 DB F0 21 E3 .p............!.
[B] aboot.mbn = 0x88e00000 offset = 0x285[/B]
00000000 05 00 00 00 03 00 00 00 00 00 00 00 [COLOR=Red]00 00 E0 88 [/COLOR] ................
00000010 10 56 14 00 10 25 14 00 10 25 F4 88 00 01 00 00 .V...%...%......
00000020 10 26 F4 88 00 30 00 00 06 00 00 EA F0 38 00 EA .&...0.......8..
00000030 F6 38 00 EA FC 38 00 EA 02 39 00 EA 08 39 00 EA .8...8...9...9..
[B] tz.mbn = 0x2a000000[/B]
00000000 19 00 00 00 03 00 00 00 00 00 00 00 [COLOR=Red]00 00 00 2A[/COLOR] ...............*
00000010 C4 3A 03 00 C4 09 03 00 C4 09 03 2A 00 01 00 00 .:.........*....
00000020 C4 0A 03 2A 00 30 00 00 09 00 00 EA 90 F2 9F E5 ...*.0..........
00000030 90 F2 9F E5 90 F2 9F E5 90 F2 9F E5 84 F2 9F E5 ................
[B] rpm.mbn = 0x00020000[/B]
00000000 17 00 00 00 03 00 00 00 00 00 00 00 [COLOR=Red] 00 00 02 00[/COLOR] ................
00000010 38 57 02 00 38 26 02 00 38 26 04 00 00 01 00 00 8W..8&..8&......
00000020 38 27 04 00 00 30 00 00 06 00 00 EA 1E 00 00 EA 8'...0..........
00000030 2C 00 00 EA 39 00 00 EA 46 00 00 EA 53 00 00 EA ,...9...F...S...
EDIT: 2/01/2014 - Updated OP to include where we're at
2/01/2014
1. Figuring out what Hellsdroid's method was - Unfortunately this seems unlikely as of now (figuring out what he did that is) On the other hand, @TMcGrath50 and I discussed a method we thought to be similar to his starting around here and then I learned how to use ida better as time went on and recently disassembled that I9505 S4 USB repair tool. I have not done a thorough analysis of the pseudocode yet though. But even so, this method has never been done before (as far as I know) and
in addition to assuming the information in the pic below is true, and we can in fact reset the emmc on our devices with Secure Boot 3.0 (would this be a way of getting around having to reset the Secure Boot bit in the pbl to "0"?) I still think this idea needs to be refined a bit before its worth exploring because some questions remain in regards to if it would even work in the first place. For example, when a JTAG solution was tested previously, the VRUAMDK aboot.mbn didn't flash on a device with VRUAME7 after all the partitions were wrote over with VRUAMDK partitions via JTAG, why? @jeboo may be able to help answer that.
Also, it was previously questioned whether or not the flash programmer (8064 hex) would need to be signed or not. As I have two S4's one thats working and one in QDL QHSUSB dload mode, in doing some recent testing through usb (S4 to S4) I was able to get some info back about my bricked S4, namely that I had sent it the wrong hex file ( see the last line here) because the dmesg and last_kmsg logs say something to the effect of "the the cpu clocks cannot start because its configured for the wrong device" and the last line from the my pastebin post says "8660" among other things as well.
Status - Unknown - More Research Required
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2. Using a Developer edition S4 to unlock a retail S4 - So here's what we know, the dev kernel (boot.img) is flashable and will work with retail S4's, but the recovery.img and aboot will not. Flashing the dev recovery.img will succeed in Odin/Heimdall, but if you try to boot into recovery it will inform you that your device is "tampered" and and will void your warranty by setting the Knox warranty bit to 0x1. Before I discuss why aboot.mbn wont flash consider this; neither the Developer edition of the GS4 nor the Developer edition of the Note 3 has every received an OTA or a factory Odin tar. This is not by random chance. Every Developer edition owner has a unique MD5 for their aboot. If you couple this with the fact that Dev edition devices have retail stickers under their dev stickers, you will probably come to the conclusion that Samsung/Verizon/AT&T haven't released updates to dev devices because they would have to do it on a 'per device' basis, that or risk handing us a method to convert retail devices into developer edition devices. If the method by which Samsung uses device specific info to sign developer edition aboot partitions were discovered this may work, or if their method to determine if a device is a developer edition or consumer retail edition is similar to what Dan R (djrbliss) took advantage of then this could be a possibility.
3,4,5,6, coming up....updating...this will be a long post...advance warning.
Status - Possibly - More Research Required
This really sucks. Looks like the dev that knows how to downgrade from ME7 to MDK is locked up for a while.
h311sdr0id is currently indisposed and will probably not be getting out anytime soon. He has court next month. If anyone is interested in writing him, please send a message to his account and I will give you his info.
- Mrs. h311sdr0id
Travisdroidx2 said:
This really sucks. Looks like the dev that knows how to downgrade from ME7 to MDK is locked up for a while.
h311sdr0id is currently indisposed and will probably not be getting out anytime soon. He has court next month. If anyone is interested in writing him, please send a message to his account and I will give you his info.
- Mrs. h311sdr0id
Click to expand...
Click to collapse
Man... Samsung's really cracking down...
Sent from my SCH-I545 using XDA Premium 4 mobile app
Is it confirmed this is Samsung's doing?
Sent from my SCH-I535 using XDA Premium 4 mobile app
Travisdroidx2 said:
This really sucks. Looks like the dev that knows how to downgrade from ME7 to MDK is locked up for a while.
h311sdr0id is currently indisposed and will probably not be getting out anytime soon. He has court next month. If anyone is interested in writing him, please send a message to his account and I will give you his info.
- Mrs. h311sdr0id
Click to expand...
Click to collapse
WOW, this is news to me! It explains why I haven't seen him update his VS3 rom in awhile.
@Nicgraner
Sarcastic joke, or are you serious?
I noticed in the note 3 part of the forum a member started a petition to unlock the boot loader. Can someone start one or combine with the note 3 page?
Petitions just turn into complaint threads. I wanted to give this a last shot, so I posted alot of info and plenty of references with the intent that even less experienced s4 users could learn and eventually contribute to helping unlock this bootloader. I also offered some ideas as a starting point. Ive never joined irc's or google talk sessions with others in trying to solve things, I mostly read and learned on my own and im by no means a dev. But I don't think we can unlock this unless we stop complaining and one-uping each other and start working together. I wish that people would stop asking if devs are still trying to unlock this, or being pessimistic about it and start being part of the solution by reading a little and then helping contribute to a solution. All suggestions are welcome. But if you don't know what comprises the "bootloader", learning the flashing order of the partitions at least uptil tz.mbn would benefit you greatly.
P.S.
Just because your not a dev doesn't mean you cant help, most devs are knowledgeable about their devices, but some don't know much beyond how to use android kitchen.
Sent from my XT912 using xda app-developers app
Surge1223 said:
Petitions just turn into complaint threads. I wanted to give this a last shot, so I posted alot of info and plenty of references with the intent that even less experienced s4 users could learn and eventually contribute to helping unlock this bootloader. I also offered some ideas as a starting point. Ive never joined irc's or google talk sessions with others in trying to solve things, I mostly read and learned on my own and im by no means a dev. But I don't think we can unlock this unless we stop complaining and one-uping each other and start working together. I wish that people would stop asking if devs are still trying to unlock this, or being pessimistic about it and start being part of the solution by reading a little and then helping contribute to a solution. All suggestions are welcome. But if you don't know what comprises the "bootloader", learning the flashing order of the partitions at least uptil tz.mbn would benefit you greatly.
P.S.
Just because your not a dev doesn't mean you cant help, most devs are knowledgeable about their devices, but some don't know much beyond how to use android kitchen.
Sent from my XT912 using xda app-developers app
Click to expand...
Click to collapse
On that note, I thank you for developing the OYUAMDK FW. I have not tried it yet just waiting for another guinea pig or at least have a backup device to swap SIMs so that I can have something to use.
Samsung has their first Dev Conference today in San Francisco and hopefully there will be Devs there to get better insight on Samsungs position on ROMs and bootloaders etc...
Awesome analysis Surge, that hellsdroid thread piqued the interest of several devs, including myself. Unfortunately I believe his thread was a bit misleading, which may explain why he closed it. There has been no demonstrated method to boot vulnerable BLs (ie, loki-fiable aboot) once the qfuse has been incremented.
Some of us are looking at the binaries, but no exploit has popped out yet. I did find it interesting they updated SBL1 in the latest OTA, that may be a hint towards something..
jeboo said:
Awesome analysis Surge, that hellsdroid thread piqued the interest of several devs, including myself. Unfortunately I believe his thread was a bit misleading, which may explain why he closed it. There has been no demonstrated method to boot vulnerable BLs (ie, loki-fiable aboot) once the qfuse has been incremented.
Some of us are looking at the binaries, but no exploit has popped out yet. I did find it interesting they updated SBL1 in the latest OTA, that may be a hint towards something..
Click to expand...
Click to collapse
So I just started analyzing my emmc back up (took the entire 16gb mmcblk0 to make sure I didnt miss anything) have you looked through the emmc? I think the modem and apnhlos are more involved in the security checks than we previously thought. Plus these tima, tzapps, and apps.mbn etc files may have contributed to the failure of flashing the mdk aboot on the me7 device you guys were attempting, is there a reason you guys didnt include the mdk modem and apnhlos in your attempt to restore the mdk bootchain? I flashed the dev bootloader with the exception of the dev aboot, boot and recovery using 3 heimdall packages. The first contained the modem, apnhlos and sbl1-3. The second contained rpm and tz, and the third contained boot and recovery (as expected this package failed) the result was my device was now on the dev bootchain with the exception of aboot, boot and recovery and confirmed these results via hexedit. So I think we can rule out sbl3 being the main culprit in checking the fuses when trying to flash a new aboot, also I dont get the "fused 3 binary 1 aboot" failure message when I attempt to flash aboot anymore, just the "secure check fail aboot" message. I definitely think its worth looking into using the dev tz.mbn to find an exploit because I no longer ever see the "samsung custom unlock" boot screen and my device believes its unmodified, and reports its official. My device is so far from unmodified its ridiculous. That means the dev tz.mbn partition I flashed is behaving as if my s4 is a dev edition (see ralekdev's post I linked to in the OP)
Sent from my TouchPad using xda app-developers app
Surge1223 said:
So I just started analyzing my emmc back up (took the entire 16gb mmcblk0 to make sure I didnt miss anything) have you looked through the emmc? I think the modem and apnhlos are more involved in the security checks than we previously thought. Plus these tima, tzapps, and apps.mbn etc files may have contributed to the failure of flashing the mdk aboot on the me7 device you guys were attempting, is there a reason you guys didnt include the mdk modem and apnhlos in your attempt to restore the mdk bootchain? I flashed the dev bootloader with the exception of the dev aboot, boot and recovery using 3 heimdall packages. The first contained the modem, apnhlos and sbl1-3. The second contained rpm and tz, and the third contained boot and recovery (as expected this package failed) the result was my device was now on the dev bootchain with the exception of aboot, boot and recovery and confirmed these results via hexedit. So I think we can rule out sbl3 being the main culprit in checking the fuses when trying to flash a new aboot, also I dont get the "fused 3 binary 1 aboot" failure message when I attempt to flash aboot anymore, just the "secure check fail aboot" message. I definitely think its worth looking into using the dev tz.mbn to find an exploit because I no longer ever see the "samsung custom unlock" boot screen and my device believes its unmodified, and reports its official. My device is so far from unmodified its ridiculous. That means the dev tz.mbn partition I flashed is behaving as if my s4 is a dev edition (see ralekdev's post I linked to in the OP)
Sent from my TouchPad using xda app-developers app
Click to expand...
Click to collapse
So does this mean if I flash your OUYAMDK ODIN image my Dev Ed phone will think its OOB without custom unlock?
Theres a post in that thread where a dev owner achieved those results as well he only flashed a couple partitions, you can get more details there
Sent from my XT912 using xda app-developers app
thread cleaned of selling and or trading and the ensuing discussion.
Use Swappa.com for that.
neh4pres said:
Is it confirmed this is Samsung's doing?
Sent from my SCH-I535 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I've always known Samsung to be like Google when it comes to consumer development. Google supports and encourages the freedom to modify Android, it being open source in the first place. Samsung doesnt mind, themselves; it's carrier security teams that require companies like Samsung to create their own methods of locking down the device for the average user. I'm quite impressed with the Knox bootloader and secure VM app. It may not be done anytime soon, but it can always be cracked. But, the fact that this code is so hard to modify, thanks to carriers, is actually a good thing.
Hey guys I am totally supporting this thread. Unfortunately i have no experience in this kinda stuff or else i would help. Good luck!
Much like most of us. Still out there Surge?
Sent from my SCH-I545 using xda app-developers app
Still here I use tw based roms so my motivation for wanting to unlock this isnt for AOSP or custom kernels. Its just the challenge, that and out of hate for Verizon lol. The Droid X sitting on my desk is a painful reminder of defeat. Cant let them win twice..
Sent from my SCH-I535 using xda app-developers app
Surge1223 said:
Still here I use tw based roms so my motivation for wanting to unlock this isnt for AOSP or custom kernels. Its just the challenge, that and out of hate for Verizon lol. The Droid X sitting on my desk is a painful reminder of defeat. Cant let them win twice..
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
No doubt... can't believe i left my G-Nex for this locked down thing... unfortunately i had to craigslist an upgrade and couldn't snag one of these when they first came out.
i am also in full support of this thread! running stock MJ7 never rooted my phone once, i have taken all the OTAs i'm really crossing my fingers that someone can break this thing so i can finally root and install a stock google rom, i hate TW so much! with all the headache with safestrap and junk on the MI1 i was not wanting to root my device just to have a half assed recovery.
Does it mean anything that my S4 is still showing unlocked and custom? Should it still show that even if it is in fact locked?
Hello,
I was wondering if anyone has managed to get this working on the Realme GT as I wanted to look at the carrier policy for my phone, as i've edited the oneplus one successfully.
But was having issues on this one, doesn't seem to recognise the phone to connect to EFS.
Yes. I got it working (on c15 eu). I was testing the same method I used on my poco f3 and it works the same way.
I'm assuming you're rooted.
If so, while usb debugging and usb transfer files mode are on , use the commands:
adb shell
su
setprop sys.usb.config diag,diag_mdm,adb
This should create two new entries in device manager with a yellow icon (faulty driver). You now need to update the driver. The best way of explaining this is to link to a youtube video. It's in turkish and for the mi10t but it works for other phones. Here it is at the correct timestamp. But written in steps it's:
Right click on the device and update driver.
Browse my computer for drivers.
Pick from a list of available drivers from my computer.
Ports (COM and LPT)
"qualcomm incorporated" and "qualcomm hs-usb android diag 9022".
Do this for both entries. They should now both be named something like "qualcomm hs usb diag 9022 (COM6)" in the ports (COM & LTP) section in device manager (each has a different port number for me).
Anyway, after that, the phone shows up in qpst.
Good luck.
Awesome, will give that a go!
joebrit said:
Yes. I got it working (on c15 eu). I was testing the same method I used on my poco f3 and it works the same way.
I'm assuming you're rooted.
If so, while usb debugging and usb transfer files mode are on , use the commands:
adb shell
su
setprop sys.usb.config diag,diag_mdm,adb
This should create two new entries in device manager with a yellow icon (faulty driver). You now need to update the driver. The best way of explaining this is to link to a youtube video. It's in turkish and for the mi10t but it works for other phones. Here it is at the correct timestamp. But written in steps it's:
Right click on the device and update driver.
Browse my computer for drivers.
Pick from a list of available drivers from my computer.
Ports (COM and LPT)
"qualcomm incorporated" and "qualcomm hs-usb android diag 9022".
Do this for both entries. They should now both be named something like "qualcomm hs usb diag 9022 (COM6)" in the ports (COM & LTP) section in device manager (each has a different port number for me).
Anyway, after that, the phone shows up in qpst.
Good luck.
Click to expand...
Click to collapse
Worked perfectly. Thanks. Have you played about to unlock any bands?
unparalleled82 said:
Worked perfectly. Thanks. Have you played about to unlock any bands?
Click to expand...
Click to collapse
No. I haven't tried anything qpst wise with my gt yet. I'm not an expert but I thought you could only activate new bands if the hardware shipped with them enabled but there's an artificial carrier based policy/limitation that qpst could change. I think there's guides out there...
My interest was in locking my phone to a certain tower (pci) for better speeds. Unfortunately, I tried this on my poco f3 a while ago but it didn't work. I used these instructions.
I basically created a file in efs explorer (nv/item_files/modem/lte/rrc/csp/pci_lock)
with the pci hex code inside but it didn't have the right effect. I think that nv item might be outdated.
Yeah the only PCI band locking apps, I've seen are really expensive paid ones, so it can be done somehow.
Network signal guru does band locking and PCI locking on the paid version of the app.
Would be interested in knowing if you actually get it working.
unparalleled82 said:
Would be interested in knowing if you actually get it working.
Click to expand...
Click to collapse
Use the following at your own risk. Make a backup of your efs in qpst (start clients, software download, backup). Having said that, I've used this method successfully to lock the pci and earfcn. It relies on an nv item file:
/nv/item_files/modem/lte/rrc/efs/cell_restrict_opt_params
Navigate to:
/nv/item_files/modem/lte/rrc/efs/
If there is already a file called cell_restrict_opt_params you can make a backup and delete it as we will be replacing it.
Note down your desired earfcn and pci. I'll use earfcn = 500 and pci = 600 as an example.
Go to this hex converter and convert the earfcn and pci values (earfcn = 01F4 and pci = 0258).
Now create a hex file called cell_restrict_opt_params (you can use this program) in the following format:
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 F4 01 00 00 58 02 00 00 00 00 00 00
00 00 00 00
It should be 36 bytes. The 21st and 22nd byte should be the earfcn hex (backwards) with the 25th and 26th bytes being the pci hex (backwards). You can then transfer the file from your pc to the efs folder.
If you want to lock the earfcn only, it's the following format:
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 F4 01 00 00
F4 01 00 00
You will probably have to restart for the changes to take effect. Delete the file if you want to go back to the original state.
Good Luck.