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Hello guys, I am relatively new to Android (some months) and I have a simple question:
How can I edit the contents of a zimage file?
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Before you answer with "why would you do that?", let me tell my reasons:
I have a SC-02C, which is basically the same phone as i9100, but with TV. When I flash a new ROM, I have to put the old kernel if I want to use GPS and oneseg TV. So, I was thinking that maybe opening both zimage files I could understand the differences and port, for example, a BLN capable OverClocked kernel to my SC-02c
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I believe it is compiled, so I need to know if there is a decompiler program which I could make this zimage file into something that humans can read (If you open zimage with a word processor, you wont understand anything)
Thanks for your time and I appreciate any suggestion.
robotsapiens said:
Hello guys, I am relatively new to Android (some months) and I have a simple question:
How can I edit the contents of a zimage file?
-----------------------------------------------------------------
Before you answer with "why would you do that?", let me tell my reasons:
I have a SC-02C, which is basically the same phone as i9100, but with TV. When I flash a new ROM, I have to put the old kernel if I want to use GPS and oneseg TV. So, I was thinking that maybe opening both zimage files I could understand the differences and port, for example, a BLN capable OverClocked kernel to my SC-02c
-----------------------------------------------------------------
I believe it is compiled, so I need to know if there is a decompiler program which I could make this zimage file into something that humans can read (If you open zimage with a word processor, you wont understand anything)
Thanks for your time and I appreciate any suggestion.
Click to expand...
Click to collapse
heres a start, the differences will be in the initramfs...doesn't work on all kernels http://forum.xda-developers.com/showthread.php?t=1069868
ok heres my problem so far. i know howto compile kernel from source, and i've manage to compile one for my live walkman, but what i dont know is howto repack the compiled zImage with ramdisk?
on my previous device samsung galaxy ace i can use a perl script from here to repack and i know that the base parameter is 0x13600000 and pagesize is 4096.
so my question is:
1- is there any similar script that i can use te repack kernel for sony?
2- if theres none, can i use the said perl script by modifying base parameter and pagesize specifically for live walkman?
3- for live walkman, what is its kernel base parameter and pagesize?
4- i know that all of our current custom kernel had cwm recovery repacked as one with the kernel, and my guess is its in the ramdisk. so which file is the cwm recovery in the ramdisk?
thanks before
ummm anyone?
i cant give u any other help rather than this
"bump"
you can sms to Doomlord for helps, he's so kind
damn... still cant figure out why my kernel wont boot.
i'm following this thread to repack the ramdisk
http://forum.xda-developers.com/showthread.php?t=1477845
Hello,
Been wrestling some time with different firmwares / mods and kernels. I had many problems and currently re-visiting my 900 apps long list in Google Play.
Currently I'm very happy with [ROM] Android Revolution HD 17.1 | High Quality & Performance | AROMA | Android 4.1.2 - especially after the many problems I had with my previous Franco kernel
BUT, again, I've chosen a custom kernel, advised by Revolution HD: Perseus-alpha27.1-i9300.tar . This kernel (?) seems to have very bad wifi performance. And I mean really really really bad Upgrading to Perseus-alpha29.1-i9300.tar did not fix, although Change Log mentioned improved wifi performance.
After having spend changing kernels and stuff many times with Odin 3.04 (I still don't understand how it knows WHAT to flash when 'an image' is offered... Must be in the tar itself, but still I thought I could easily download the Samsung Galaxy Siii official stock kernel (NOT ROM, but KERNEL). Should be a small file (<10MB), not a >700MB download with the ROM included.
I've browsed many threads on xda and beyond, but downloading JUST the OFFICIAL kernel... SIGH I cannot find it?!!
What am I missing here??
Very curious if anyone can point me to a download link for the official kernel.tar I need? Or kernel.zip? I don't feel like re-installing everything, I just want to re-install the kernel alone. OR is this impossible? Please advise, I don't like feeling like a newbie
One of the few downloads I could find (like forums . androidcentral . com /verizon-galaxy-s-iii-rooting-roms-hacks/191375-guide-restore-back-clean-factory-stock-update-10-23-a.html) do not work - when flashed my phone ends up bricked (tested many times:0).
Anyway, thank you for a great forum!
Phone info: Samsung Galaxy Siii International GT-i9300
Android Version: 4.1.2
Baseband: i9300xxelkc
Kernel 3.0.36-Perseus-alpha29
Build Android Revolution HD 17.1 by mike1986
Peace!
Devvie
~~~ [email protected] ~~~
Cuisvis hominis est errare, nullius nisi insipientis in errore persevare
——
All spelling mistakes are my own and may only be distributed under the GNU General Public License! – (© 95-1 by Coredump; 2-012 by DevNullius)
See your other post I have replied to that one.
Sent from my GT-I9300 using xda premium
Trying to solve it myself - part xxx ;p
The following Google search brought some light to the end of the tunnel, I hope: http://www.google.com/search?q=stock+zimage+i9300+samsung&oq=stock+zimage+i9300+samsung&ie=UTF-8 .
It first brought me to this page: http://androidromupdate.com/2012/06/05/how-to-install-stock-rom-on-samsung-galaxy-s3-s-iii-gt-i9300/ .
There I learned the following (quote):
" Stock ROMs contains the binary and image files of the whole software packaged, like these:
* Sbl.bin
* cache.img
* factoryfs.img
* hidden.img
* modem.bin
* param.lfs
* zImage "
So I figured to let 7zip extract the stock firmware I downloaded (>700MB). Except for unexpected archive header warning, 7zip extracted just fine. I ended up with:
* boot.img
* cache.img
* hidden.img
* modem.img
* recovery.img
* system.img
From the chapter "For some reasons how to root the device info is here" (http://forum.gsmhosting.com/vbb/f200/galaxy-s3-i9300-flashing-root-guide-1483155/), I learned the following:
Quote: " According to Chainfire, the modification of the kernel was not as easy as done for the SGS I, SGS II, and SG Note, because, “…this time around, Samsung is using the standard boot.img format, instead of the zImage format used for SGS1, SGS2, SGNote, etc, that is much harder to repackage.”
This time around, the SGS III also has a separate Recovery partition, and unlike its predecessors, a custom recovery can now be flashed independent of the kernel."
So zImage is boot.img on i9300 - finally I learn something :> Also see: http://forum.xda-developers.com/showthread.php?t=2022181 .
I was hoping that I could just flash this file with Odin. I have not tried it yet, for I first wanted to make sure that boot.img === kernel-to-flash
http://www.google.com/search?q=what+is+a+zimage brought me to http://www.embeddedarm.com/support/faqs.php?item=2 and especially http://forum.xda-developers.com/showthread.php?t=1284986 . And brought many more questions - just flashing does not seem to be the trick?
So googling some more:
http://www.google.nl/search?q=is+the+(zimage.img+OR+boot.img)+the+same+as+the+kernel??&ie=UTF-8 brought me to: http://forum.xda-developers.com/showthread.php?t=1477845 where there are instructions on how to split the kernel :s SIGH - why is this so hard??? Grmbl.
Quote: " At this point, we need a boot.img file to play with.
Pick your favorite custom kernel and get the .img.
Place it in a folder along with the 2 perl scripts from the attached package.At this point, we need a boot.img file to play with.
Pick your favorite custom kernel and get the .img.
Place it in a folder along with the 2 perl scripts from the attached package. "
And: " Can I do this on Windows? - Not that I know of, no. " SIGH!!
At this point, I'm about to give up again. One more page? http://www.freeyourandroid.com/guide/extract-edit-repack-boot-img-windows .
Quote: " boot.img is a small(ish) file that contains 2 main parts, the kernel (the brain of the Android system) and the ramdisk (a core set of instructions and binaries that begins the boot process and controls base aspects of the system, such as mountpoints, memory management and startup services). "
This looks promising! This solution works on Windows by installing Cygwin (Linux for Windows) and the for-mentioned scripts. I learned more AND I see confirmation for what I already learned...
Quote: " boot.img-kernel is the compiled kernel blob that was inside the source boot.img, if you want to replace the kernel with another compiled kernel image, you can replace this file with another one (but leave the file name the same)
boot.img-ramdisk.gz is the gzipped ramdisk image which has been split from the boot.img, you should leave this file alone.
The “out” folder contains the EXTRACTED ramdisk, and this is where you should make your changes to the ramdisk. "
This is something I definitely will try out tonight when I'm home - light again?
Peace!
devnullius
--
Some further technical info and background reading with some nice tools: http://android-dls.com/wiki/index.php?title=HOWTO:_Unpack,_Edit,_and_Re-Pack_Boot_Images (from: http://forum.xda-developers.com/showthread.php?t=1831027 ).
Partial solution for my stalled wifi connection due to custom kernel (gs3)
I'll will investigate the splitting-process one day for sure. For now, I have solved it, although I expect problems...
To manage the phone, I downloaded SGS3_International_ToolKit_v6.0.exe (>100MB). After installation this gives C:\Samsung Galaxy S3 ToolKit\root . This folder contains many boot images (stock or insecure). I chose for boot-insecure-xxdlj4-i9300.tar (for Android 4.1.1).
After flashing it with Odin, my wifi problems with slow to stalled network traffic was instantly solved Now my phone reads as follows:
GT-i9300 / 4.1.2 / i9300XXELKC / 3.0.31-368423 [email protected] #1 SMP PREEMPT Fri Oct 19 18:17:48 KST 2012 / Android Revolution HD 17.1 by mike1986.
LAST QUESTION, for now, is: is it pure luck that the kernel made for 4.1.1 works with 4.1.2? Or does that have nothing to do with it???
Peace!
devnullius
Actually the new boot.img is a lot easier to decompile and recompile compared to the SGS1/2's zImage format
Sent from my GT-I9300 using xda premium
I can provide the boot.img from xxelkc
Actually I use franco.kernel updater app in which I can either backup or restore my kernel
That's how I got the boot.img
Sent from my GT-I9300 using xda premium
freddy1991 said:
I can provide the boot.img from xxelkc
Actually I use franco.kernel updater app in which I can either backup or restore my kernel
That's how I got the boot.img
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Yeah, that's how all my troubles started I first did Franco kernel, then I switched to ClockworkMOD. I had problems and wanted to reverse kernel with the backup I made with Franco Kernel Updater app. It failed and gave me bricked phone
I really start to think all those custom kernels are to be AVOIDED ;p
Thank you, merry christmas and... Peace!
devnullius
Hi Every body ,
i want to flash a modified kernel in to my I 9100G phone , and am wondering is there any body could help me
by sharing a download link of the AnyKernel.zip tool
Ps: i want to flash my ZImage and the ramdisk with the built modules .
best regards
Hey.
I hope you know, what you are doing anyway https://github.com/koush/AnyKernel this is what you are asking just download zip.
Oh and you can give me a shout if something goes wrong
Thank you for your Help , i will try flash the kernel today,
adding information that, am trying to build the "GT-I9100G_ICS_Opensource_Update2", and i choose this tool to help me flashing my Zimage with the ramdisk (initramfs) including the Built modules .
Thak you, i will give you shouts
hi,
thanks to Mantulis for sharing the link .
After downloading AnyKernel.zip , i did the necessary steps by moving my zImage to "kernel folder" and the built modules in "/system/lib/modules/" folder , but it seems that i couldn't flash it using the CWM ,
i had the message like :
finding update package ...
Opening update packages ...
Installing update ...
AnyKernel Updater by Koush
Extracting system files ...
.
.
.
Done ...
but when viewing my Kernel version i found that it's the same old on (the kernel didn't flashed for real !!!!)
Ps:
I rebuilt the GT-I9100G_ICS_Opensource_Update2 kernel, and i get my Zimage,
i am using :
- Ubuntu 11.04,
-i tried the "arm-2010q1" toolchains and the "arm-eabi-4.4.3" one ,
- am using initramfs of Mr superatmos, that he mentioned in his thread http://forum.xda-developers.com/show....php?t=1587482 .
- i am working with "android_t1_omap4430_r03_user_defconfig", imade no changes to the .config file just the CONFIG_INITRAMFS_SOURCE.
my phone is on the ICS 4.0.3 ROM, with the 3.0.8-TH [email protected] #1 kernel version
Hi people,
after downloading AnyKernel.zip, and flashing the .zip to my I9100G phone, i always got a boot loop,
After the researches that i made, i understand that the Anykernel.zip was developed to HTC smartphone and not for te I9100G,
i Solved the boot loop situation by getting a new initramfs from the CWM kernel source and compiling my zImage with the arm-2010q1 toolchains.
Salutations.
I downloaded the zip and flashed it...
Still in a boot loop. Could more light be shed on this operation. Thank you.
Hello,
First of all, this is my first post in the forum and my first time trying to compile an Android kernel.
My intention was to port Nethunter for my tablet, Samsung SM-T580 (Galaxy Tab A6 10.1 only wifi).
I have successfully compiled the original kernel offered by samsung and i have ended up with a file called Image, a file called Image.gz and a dts folder
I have extracted the original rom boot.img with mkbootimg_tools and i see a kernel file, a ramdisk folder, a ramdisk.packed file and a dt.img
For what i have found is that this must be a non standard thing, the way samsung manages this, and despite i have seen various guides on compiling samsung kernels, i haven't found anyone doing it straight from samsung sources.
I think that the dt.img part is solved with the dtbTool, but i haven't been able to figure out what to do with Image and Image.gz to get the kernel and ramdisk.
¿Can someone give me a lead on this? ¿Is it doable? ¿Should i look for other kernel instead?
Its been long time ago... But did you manage to compile the kernel?