Hi.
While trying to upgrade my tablet to a later version of Android, something borked the bootloader. The tablet boots fine to a bare ICS (no gapps, but ROM MANAGER installed, though it does nothing but hang), but trying to boot into recovery mode hangs it (black screen with android robot, OEM info).
I can install apks to the tablet. I have installed ADB on my PC and it sees my tablet.
Where do I go from here ?
I have no clue
- what exact file(s) I need (my tablet is an Ainol novo8 advanced)
- where I need to put them
- what the commands are to do that
- it should be rooted (the superuser app aloows me to grant su privileges to apps)
Any help that can bring my tablet back to life would be very welcome.
Olivier
obarthelemy said:
Hi.
While trying to upgrade my tablet to a later version of Android, something borked the bootloader. The tablet boots fine to a bare ICS (no gapps, but ROM MANAGER installed, though it does nothing but hang), but trying to boot into recovery mode hangs it (black screen with android robot, OEM info).
I can install apks to the tablet. I have installed ADB on my PC and it sees my tablet.
Where do I go from here ?
I have no clue
- what exact file(s) I need (my tablet is an Ainol novo8 advanced)
- where I need to put them
- what the commands are to do that
- it should be rooted (the superuser app aloows me to grant su privileges to apps)
Any help that can bring my tablet back to life would be very welcome.
Olivier
Click to expand...
Click to collapse
If you can still use ADB your tablets bootloader is likely not messed up, it sounds like you booted the tablet into fastboot mode not recovery. To get into recovery you can enter it by holding a key combination the most common combination is holding volume up plus the power button at the same time. If that doesn't work from ADB you should be able to get into recovery by running the command:
Code:
adb reboot recovery
Also ROM manger doesn't always work right with every device so I would recommend just uninstalling ROM Manager for now. If it is booting fine into bare ICS then your tablet should be ok, if your looking for Google Apps for ICS they can be found here http://cmw.22aaf3.com/gapps/gapps-ics-20120317-signed.zip. Let me know if you still have questions .
Sent from my SCH-I535 using xda premium
Thanks a lot for your answer.
I'm sorry I didn't describe the issue well: I can no longer access the recovery mode.
I used to get to it by cold-booting the tablet holding Vol+ and Power. I used that to install ICS, gaps, powertools and 3D tools as described in http://forum.xda-developers.com/showthread.php?p=36059461#post36059461. The first package (recovery CWM) failed to installed because it was unsigned), the others installed, but in the end it seems I only got ICS: I have no gapps.
Now doing Vol+ and Power only gets me to the boot screen (a green android with OEM info, on a black background). Your "adb reboot recovery" does the same. I can only exit that screen by a hard reset.
During a normal boot, that screen flashes by for a couple of thesconds, then another, then the ICS colorful boot animation.
I have no clue how the recovery boot process works. I'm guessing it's reading a file of the internal Flash, and that file or dependencies got corrupted or partly overwritten by one of the packages I installed ? I'm not even sure if CWM recovery replaces the default recovery mode, or if it chains right after it ? I do have a supposedly-working CWM recovery .zip from the authors of the CM10 hack, as well as the "original" files listed here: http://forum.xda-developers.com/showpost.php?p=31089682&postcount=286 (official images from an out-of-the-box, unhacked tablet).
PS: the recovery mode I used to have was very rustic, only taking "update.zip" as an input, so when I did the update I had to go back and forth renaming the first package to "update.zip", applying it, renaming it "update1.zip, then on the the second package, etc, etc... It said Android System Recovery (3e), so maybe 3e was the version.
last but not least, if I could at least get the gapps onto the tablet, even w/o fixing the recovery mode, it would be very useful. I can install apks, or follow instructions to do it via adb ?
obarthelemy said:
Thanks a lot for your answer.
I'm sorry I didn't describe the issue well: I can no longer access the recovery mode.
I used to get to it by cold-booting the tablet holding Vol+ and Power. I used that to install ICS, gaps, powertools and 3D tools as described in http://forum.xda-developers.com/showthread.php?p=36059461#post36059461. The first package (recovery CWM) failed to installed because it was unsigned), the others installed, but in the end it seems I only got ICS: I have no gapps.
Now doing Vol+ and Power only gets me to the boot screen (a green android with OEM info, on a black background). Your "adb reboot recovery" does the same. I can only exit that screen by a hard reset.
During a normal boot, that screen flashes by for a couple of thesconds, then another, then the ICS colorful boot animation.
I have no clue how the recovery boot process works. I'm guessing it's reading a file of the internal Flash, and that file or dependencies got corrupted or partly overwritten by one of the packages I installed ? I'm not even sure if CWM recovery replaces the default recovery mode, or if it chains right after it ? I do have a supposedly-working CWM recovery .zip from the authors of the CM10 hack, as well as the "original" files listed here: http://forum.xda-developers.com/showpost.php?p=31089682&postcount=286 (official images from an out-of-the-box, unhacked tablet).
Click to expand...
Click to collapse
obarthelemy said:
PS: the recovery mode I used to have was very rustic, only taking "update.zip" as an input, so when I did the update I had to go back and forth renaming the first package to "update.zip", applying it, renaming it "update1.zip, then on the the second package, etc, etc... It said Android System Recovery (3e), so maybe 3e was the version.
Click to expand...
Click to collapse
obarthelemy said:
last but not least, if I could at least get the gapps onto the tablet, even w/o fixing the recovery mode, it would be very useful. I can install apks, or follow instructions to do it via adb ?
Click to expand...
Click to collapse
The recovery you are referring to is to the standard Android 3e recovery it is included in every version of Android, and will always be like that unless you install a custom recovery such as CWMR and or TWRP. As a general rule you should never install a custom ROM without having a custom recovery image installed first, essentially all the stock 3e recovery is good for is installing OTA updates and preforming a basic factory reset of your phone. You should try and fix your recovery before going any-further, you can sign the un-signed zip by using this tool. Overall, I would focus on trying to fix the recovery to prevent any further damage to your tablet and so that way you have a simple way to recover from anything that might go wrong when flashing ROMs, mods, and other zip files.
issue with the uImage linked
The uImage linked on the download pages for the CM10 and CM9 version ends in ".*"
I have no clue what the normal extension should be; replacing that *.zip doesn't work. Is the file bad, or am I just too clueless about what to do with it ?
Ok so the question is:
1- which "recovery mode" file should I install on my tablet, especially since the mod author's ones seem flaky
2- how do I do that via ADB since my tablet no longer seems to have a working "recovery mode".
I'm sorry to hassle you with those questions... I've looked around, I can't find info nor files I'm confident about ?
Hey guys,
I have a bit of a head scratcher. I am currently trying to flash my new Sanei n10 tablet with CM10 and it is proving much more difficult than I first imagined.
My main problem seems to be that the device just does not want to boot in CWM. I have installed the latest version of CWM (found here) via the Terminal Emulator but it doesn't boot into CWM Recovery, but rather just boots normally. I have also tried using the hard keys to boot into it but all that does is boot me into the default android system recovery (3e) which is useless as it will only update from verified roms.
The device is rooted and I have ROM Manager installed. I have given Terminal Emulator superuser permissions... It just doesn't seem to want to boot into CWM Recovery. I have tried using both ROM Manager as well as NOVO7 Tools to boot into it but I get the same results (device just reboots normally)
I think that it might be something to do with the stock ICS 4.0.4 that came with the device.that is causing me so much hastle, but I was hoping someone out there might have experienced a similar issue or can offer some insight to where I am going wrong.
Thanks in advance!
M
msm1003 said:
Hey guys,
I have a bit of a head scratcher. I am currently trying to flash my new Sanei n10 tablet with CM10 and it is proving much more difficult than I first imagined.
My main problem seems to be that the device just does not want to boot in CWM. I have installed the latest version of CWM (found here) via the Terminal Emulator but it doesn't boot into CWM Recovery, but rather just boots normally. I have also tried using the hard keys to boot into it but all that does is boot me into the default android system recovery (3e) which is useless as it will only update from verified roms.
The device is rooted and I have ROM Manager installed. I have given Terminal Emulator superuser permissions... It just doesn't seem to want to boot into CWM Recovery. I have tried using both ROM Manager as well as NOVO7 Tools to boot into it but I get the same results (device just reboots normally)
I think that it might be something to do with the stock ICS 4.0.4 that came with the device.that is causing me so much hastle, but I was hoping someone out there might have experienced a similar issue or can offer some insight to where I am going wrong.
Thanks in advance!
M
Click to expand...
Click to collapse
here
1. Download the latest ClockWorkMod for Allwinner A10 tablets from here:
http://forum.xda-developers.com/show....php?t=1802268
2. Put all three files in the ZIP inside the root of a MicroSD card and insert it in the tablet
3. Check from the Terminal app inside the tablet to see if the MicroSD card is mounted in /sdcard (just type "ls /sdcard").
4. If the "ls" command doesn't show anything (that's what happened in my case), then you must modify the "install-recovery.sh" file and replace all instances of "/sdcard" with "/mnt/extsd".
5. With the proper "install-recovery.sh" file, run the commands specified in the above xda link (in my case the card is in "/mnt/extsd" instead of "/mnt/sdcard" as the original example shows):
su
cd /mnt/extsd
sh install-recovery.sh
sh reboot-recovery.sh
6. The tablet will then reboot to CWM recovery. Then follow the regular steps to install Cyanogenmod (wipe plus install ROM + GApps + Compatibility). This time the Recovery menu won't care about the files being unsigned and will install them right away!
So, I've stupidly let my son try and flash a custom rom on his generic chinese tablet (Cambridge Sciences StarPAD 9 SE) and he found a few very similar spec tablet roms on the internet which said they require TWRP to be installed before flashing. So he's installed that, rebooted into recovery but the TWRP doesn't fit the screen in terms of resolution size. Now, that's not the main problem. The main problem is that the touch screen doesn't work at all within TWRP so I can't select any of the options. Whenever I power off the device and power it back up, it reboots to TWRP and doesn't boot to the main ROM. He said that it did originally reboot to the ROM whenever he first installed the TWRP because he said that it was the only way of getting to the recovery. So I thought that I could just use ADB and just force a reboot from there but off course, there is no ADB device driver to be found on the internet.. well not that I can find anyway.
I'll attach a photo for you guys and hopefully someone can help me with this as I've spent the best part of 2 days trying to figure out a fix but am now stuck.
I'm now able to access the device by adb however I don't know what to do from there.
Any help?
Does anyone have any firmware for this device? I can't find anything on the internet at all. If I could get a firmware img then the device will be fixed.
The build number from the firmware is: fiber_evb-eng 4.1.1 master 20130530
the command is "adb reboot" AFAIK
Did he take a nandroid backup before flashing? It looks like a version of twrp that is not compatible with the tablet was installed. Not every device supports touch screen recovery mode. Can you use the volume rocker to navigate?
I can almost guarantee you won't find the firmware for a Chinese tablet. I've just been trying to help someone in a similar situation but the best we could manage was a ROM that had lots of glitches.
Edit how did he flash TWRP if it was incorrectly flashed ie: fastboot flash boot recovery.img instead of fastboot flash recovery recovery.img then that may produce a device that would boot straight into TWRP. I've heard of that happening on a nexus 7
Sent from my C5303 using xda app-developers app
hello everyone i need help with my mediapad 7 lite , i been searching for months and have not been able to install a single recovery like cwm twrp etc. would someone tell me what is going on , most guides stuck at fastboot and waiting for device . why is there so much shadyness would anyone post a good solution with tools etc? mediapad 7 lite s7-932u. well i hope i get a solution , i want install android lollipop , and by anymeans is there a rom for the bios to make the processor quad or dual . as simple as formating windows 98 or xp please.
I am sorry if you don't like my answer as I know your device is not the same as this TWRP but you may like to port it? or compile it?
I think you need to root your device as well otherwise you may struggle.
http://forum.xda-developers.com/showthread.php?t=2693100
Note this is tested on S7-931W while your post shows you are keen to get s7-932u.
If you use Linux you can download that TWRP, unpack it with imgRePackerRK
http://forum.xda-developers.com/showthread.php?t=2257331
then use Android to get info on where your recovery is and take a backup image of it
copy your stock recovery to Linux, unpack it with same tool as above, then swap in your kernel into TWRP and adjust the fstab and a few text files to match your ids
repack modified TWRP with imgRePackerRK and flash it.
making sure you have kept a backup on your removable sdcard.
good luck
Hope that sounds enough interesting to get you here
to my problem:
I have a Huawei MediaPad 10 Link+ and theres NOTHING out there for it. So i decided to make it on my own.
belive me theres no recovery or rom for this tablet.
i had a long journy so dont think this is my first problem
i dumped my boot.img, recovery.img and system.img
i used this tool to unpack my recovery modified it, repacked it and flashed it. but the recovery wont boot up. just stuck at the first mediapad logo.
Even if i NOT touch it. ( just unpack / repack )
my problem is not to restore it. i want a modifyd recovery. maybe sobody here can help me.
thanks in advance
PS: the best would be if somebody could port me CWM or TWRP
i tried to make it on my own but ubuntu says no and punchd me in the face
The Author of the tool stated, that it won't work on every device.
But if you plan to build cwm or twrp for your device, you will need ,sooner or later, linux.
So save yourself some trouble and time and install linux in a virtualbox.
It will make numerous things easier for you :good: .