General :: Allwinner A13 - CWM Boot And Touchscreen Failure
Sep 15, 2013
I own a Allwinner A13 7 inch tablet, on which I installed the Cyanogen 10 mod (Due to restrictions I cannot place the link to the mod)
The problem is I probably installed the wrong touchscreen driver, so the tablet boots perfectly into the Mod but I can't do anything. Normally it would be no problem to just put back my backup, but I can't get it to boot into CWM.
In the first place I rebooted into CWM to instal the mod by adding the following command through the "terminal app" before rebooting,
Command: "echo -e 'boot-recovery' > /dev/block/nandf; sync"
Now I cannot use the screen so i cant use the terminal. I also cannot use ADB because USB debugging is standard switched of after flashing a new MOD. Any other way to get into CWM??
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Dec 9, 2012
Tablet hangs in Bootloop after installed cm9_nightly_20120721 + protab2xxl_compatibility_1.2.0 startet from cwm 6.0.1.0. Noticed that the "/data" partition only has 15MB of Space with 0B Byte free. I wiped the cache after installation with cwm, i am not able to boot to cwm again because key combinations not work on this device.
Got a T15A Generic tablet which has the same Hardware than protab 2 xxl, Goclever A103, Coby 1042 etc..how to get CM9 or CM10 running?
Code:
--------- beginning of /dev/log/main
I/cm ( 70): Welcome to Android 4.0.4 / CyanogenMod-9-20120721-UNOFFICIAL-907
I/cm ( 71): _
I/cm ( 72): __ __ _ ___ _ _ __ ___ __ _ _ _ _ __ __))
I/cm ( 73): ((_ (/'((_( ((( ((_)((_( (('((( ((`1( ((_)((_(
[code]....
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Jun 26, 2013
I am trying to use my cheap virtually unbrickable tablet to learn more about kernel development and eventually ROM building.
I have extracted the manufacturers (WoPad) LiveSuit image and used split_bootimg.pl to break up the boot image.
I extracted the config file from the kernel image using extract-ikconfig and it created a config file. I didn't see the config in /proc.
So, I have the factory ramdisk and the factory kernel config.
I have downloaded several kernel sources (lichee-3.0.8, ChritianTroy's 3.0.36, and another one from linux-sunxi 3.0.72). I can successfully compile all of them without errors and they all generate zImages, uImages, etc using the factory config as well as the sun4i_crane configs they come with.
When I repack the boot.img with the newly created kernel and install it on nandc it wont' boot past the android icon (u-boot). When I compare my boot.img to the factory one, they both have the same offset where the kernel starts (0x00000800). I have also ensured I'm replacing the kernel modules when I'm changing kernel versions.
Here is the line I'm using to repack the boot.img
Code:
mkbootimg --base 0x40000000 --pagesize 2048 --kernel zImage --ramdisk ramdisk-repack.cpio.gz --board sun4i --cmdline "console=ttyS0,115200 rw init=/init loglevel=8" -o boot.img
[Code]...
Also, I'm building on Ubuntu 13.04 with Google GCC 4.6 from the ndk. I have built kernels for other devices without issues.
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Dec 20, 2012
How to replace the default boot splash on an Allwinner A13 tablet? I'm thinking about replacing the rather tacky default image on it, and maybe the battery charge and other bitmaps.
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Apr 20, 2014
I received a generic Chinese table. it worked well for about two-and-a-half months. Then, just recently, I discovered rooting and the wonderful things it allowed you to do. I decided to download a system-tweak app, which included a CPU control. I was a little wary of overclocking my CPU, having heard it may decrease its life expectancy, but finally I thought "What the heck?" and in a brilliant stroke of genius cranked my 1Ghz processor up to 1.5Ghz, and it promptly froze, forcing me to power it down. When I turned it back on, I discovered that it had been factory reset. I re-installed my apps, including the system-tweak app, and decided not to touch the CPU controls for a while. Soon after, while at my sister's talent show, I discovered I had about 30% battery life, and I was still supposed to record her. So I figured I'd underclock it to save the battery.
Unfortunately, as my finger touched the slider, my brother bumped my arm and caused me to lower the CPU frequency to its lowest setting. It became extremely sluggish, almost to the point of being unresponsive, and finally I had to shut it down. When I restarted it, it started to boot but then got stuck on the shimmering Android logo, and now that's all it does. I can't even boot into recovery mode, and unfortunately I had just turned off USB debugging that same day.
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Oct 17, 2013
i have a cheap alwinner a13 tablet (simmtronics xpad x720) from indian manufacturer. It is stuck at cwm recovery it countineously boots to cwm after restart.I have no backup stock rom. But i can sideload zip from adb or external ed. And not able to mount internal sd or wipe cache.
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Mar 1, 2013
I used insecure boot and root trying to root my phone, which was a huge mistake as i noticed a few minutes later since i cant startup anymore and only get into bootloader.
Now I'm trying to flash my stock rom back.
My CID is VODAP102 and my Version is 3.14.161.27 so i downloaded the rom and tried "fastboot flash boot boot.img" the result is:
sending 'boot' <8192 KB>...
FAILED <data transfer failure <Unknown error>>
finished. total time: 0.158s
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May 30, 2010
I ran into this with my corporate e-mail this week on a Google I/O Evo. The setup of my exchange account was painless. Just need to plug-in my e-mail, password and a device password. Exchange syncing works fine until you turn off your phone. When you power the phone back on, it boots up to the point where the Sprint intro video plays. At that point, according to Sprint tech support, the Exchange syncing hits a snag and causes the phone to restart indefinitely playing that same loud, annoying intro video over and over. The only workaround was to open up the bootloader (power+volume down on power up) and erase all my data. I went through a simple setup and a simple setup + exchange again to confirm that it was indeed the Exchange account that introduced the problem.
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Jun 12, 2013
I want to get a custum recovery because I can't access to my recovery mode it shows a foto of a droid, I tried rebooting from rom manager app, and from the power and Vol+ .. but nothing works you can check the foto in the attachments.
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Apr 19, 2012
Is CWM available for the Eken T01? I have posted this question several times on other boards and never got an answer either way. I just got this tablet and I have rooted it. However I would really like to make backups with CWM like I do with my phone because it has saved my butt more than once
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Oct 6, 2012
is it possible to port a cm7 for allwinner a10 tablets??
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Jul 9, 2013
I recently acquired an A13 tablet and wanting to install CM10 on it I first installed CWM 6.0.2.8 according to the famous manual (if it's relevant I'll post the exact url). Anyway, it got stuck on CWM (doesn't boot normally). Now I figured it can't install since using 'adb shell' and looking at /proc/partitions -- nothing is there!
"""
cat /proc/partitions
major minor #blocks name
179 0 15558144 mmcblk0
179 1 15554048 mmcblk0p1
"""
So I have no internal memory to use -- no internal memory to install to, right?
"""
ls /dev/block
loop0 loop2 loop4 loop6 mmcblk0 nandf ram0
loop1 loop3 loop5 loop7 mmcblk0p1 platform ram1
"""
Seems that only nandf exists, which means I can't cat into nandg and sync and install new img. Right? Or am I missing something? How do I fix this?
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Dec 24, 2013
I cannot find out how to add drivers to a ROM
I don't have a backup of the stock ROM, however i have a ROM in which everything apart from WiFi works ( 5 point touch screen, all hardware buttons, sound, screen)
This Q88 ROM is downloaded from [URL] .....
I tried the cyanogenmod ROM from ANONFBI [URL] ..... and nothing works apart from the wifi driver no touch, no volume buttons
I would like to extract the drivers from the q88 rom and add them to the cyanogenmod rom.
I've never been able to get the camera working its the single front camera it doesn't bother me its not very good
I tried this thread [URL] .....
However when i load a driver the ported PORTED JB-4.1.1 rom doesn't boot up
I see it has camera drivers but i dont know how to install them
I have attached a LSMOD from the q88 rom
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Mar 18, 2010
I wonder if ne one had an major issue with their touch screen before like I had with mine. So I decided to post this little story. Let me start off with a little background info. I got my droid november 6, 5 46am central time zone. don't ask me how but the vzw dude was letting me earlier cuz I had work. I was so happy that day leaving t mobile I did love my g1 but wen I read all about the droid I felt likt I had to leave her and move on. She did do a lot for me but time tells all and it was my time go and move on.Untill two months ago (Present time I'm talking in) I realized not everyone has the bubbly keyboard. I saw friends at my unit (I'm in the army reserves) that bought the droid a couple of months after me had flat keyboards n they were bitching bout how flat it was. I agreed with them since I was woth a g1 the keyboard was a bit flat but nothing to were its such a pain, so my friend shows me his keyboard and I looked shocked played with it was like wow and I pulled my n did a side by side side comprasion and this before I saw the bubbley keyboard thread on here. So unforunately my toucscreen starting doin its own thing like it was ghost writer and spazzing out. I had no control over it this happened monday nite and I was dreading it that I will end up replacing it. But it would not let me do nothing.I couldn't go ne where on my screen it would randomly hit different icons to the point were sum times it would call my contacts. I only had control over the physical buttons. So on Tuesday during work I fought the ghost writer to let get to setting a do a system restore. First minute of the set up was ok but right wen it finish and I was on the home screen again. I was like FUDGE I don't want to replace my rare Droid. After work I replaced it, I was real pissed I had the bubbly keyboard and (something I didn't noticed untill I got my replacement) the golden plated volume side button. I miss my precious rare droid. I was soo proud to be first non employee to have the droid in houston.
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Oct 20, 2013
caused & am now stuck in a recovery boot loop.
- bought a Thomson QM734-8G tablet (Allwinner A13b clone), running Jellybean 4.2.2;
- PC interface worked fine in MTP and large storage modes;
- setup Android SDK & Java JDK on PC and communicate with tablet via ADB;
All OK so far..After a couple of days, I decided to replace stock recovery with ClockworkMod Recovery, so I could start messing about with the tablet.
I found the CWM 6.0.2.8 mod supposed to work with these tablets and, following instructions, determined it was indeed running on sun5i hardware and had 10 partitions (nandj) and downloaded the appropriate version.
I used ADB sideload to install CWM and everything appeared to work OK ... until I rebooted and found myself stuck in a never-ending cycle of CWM-based recovery bootloop.All I get is the CWM recovery console, with a few lines of error & the tablet will go no further.
E:can't mount /cache/recovery/command
E:cant mount /cache/recovery/log
E:cant open /cache/recovery/log
E:cant mount /cache/recovery/last_log
E:cant open /cache/recovery/last_log
CWM functions work properly and nothing will mount through the 'Mounts and Storage' section, although sideload mode still seems to work.Attempts to use ADB sideload to install a different CWM or other recovery image have all failed, and LiveSuit and PhoenixSuit both have issues detecting the tablet (despite trying various versions of each & following instructions precisely), so I can't flash a replacement ROM to fix things.
At the moment, I just want to rip CWM out and go back to factory recovery mode and have a working tablet again! I think the Bootloader is locked and the tablet is unrooted. Superuser or SuperSU don't want to install properly. However, using ADB, it looks like I can get root access in shell (#).
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Jul 31, 2013
Basically I ran Livesuit to flash my Chinese Tab, its called a desiretab has an a10 processor. Anyways the first flash was successful, besides the fact that it didn't pick up touch calibration correctly. So, I decided to flash it again with a different firmware image, low and behold it gets about 50% in and just freezes up. Now the Tablet shows no form of screen output, I attempt to flash it repeatedly, nothing works.
When I say I attempt to re flash it and nothing works, I'm saying that it just sticks at zero and the flash command does nothing.
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Jan 13, 2014
I using Onda v975s (chip Allwinner A31s). In Android 4.2.2 i can root it. But when i up to rom Android 4.4.2. It can‛t root.
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Jun 7, 2014
I have an Allwinner A31s based tablet and I can root when i use Android 4.2.2.
Couple of weeks before my tablet producer relase Android Kitkat Rom
Old method for rooting Android 4.2.2, dosen't work on Kitkat.
How can I root my Allwinner A31s based tablet on Android Kitkat?
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Apr 23, 2013
I have compiled cwm for an allwinner a13 tablet I am stuck for in for on recovery but can't do any thing it just reboots to recovery if I select reboot system and can't install backup restore.
Only adb side loading works tried to install another working old cwm it shows successfully installed but it reboots to the same recovery.
I tried to install a custom rom but first I got first error in get prop =build Id
So removed get prop lines in updater script now I am getting installation aborted status 0 error
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Oct 6, 2013
i have a allwinner a13 tablet that has gotten stuck in the process of opening. i had installed clockmodrecovery and uberizer. and was looking for a way to correct root 'permission" that kept coming up when trying to install programs that needed root access. then i messed up.
i was trying to restore factory when it froze. i cannot use buttons to enter recovery mode. i made a back up in uberizer but am unable to find .how to use. also since this is happened i cannot load any driver to recognize the tablet into windoes 7device manager.
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Feb 6, 2013
I have a generic Allwinner A13 7" tablet essentially identical to this one. The internal memory is set so that part of it is seen as internal, and part as a fake SD card mounted on /mnt/sdcard. Actual SD cards get mounted to /mnt/extsd.
I find this very annoying for a number of reasons, and would like all the internal memory to be seen as internal with no fake SD cards, and SD cards to be mounted to /mnt/sdcard. If this were one of those tablets capable of running Linux I'd run gparted and do the job from there, but it isn't.
Is there any way to merge the two internal memory partitions into just one?
I'm aware I can edit vold.fstab and invert the two mount points, and I'll keep it as a fallback solution, but I hate the idea of wasting a gig of useful internal space like that.
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Mar 23, 2014
I have an Allwinner A20 tv box, I trying to use it on a device with an old, low res, 4:3, 5" screen. It works but I have a few problems - firstly the box has "pal" and ntsc" settings for use with AV out, but when connected the picture is squashed inwards so circles are represented as ovals. I ve tried to mod the aspect ratio/resolution but nothing works, the picture is always distorted.
On top of that everything is too small for the screen, it is readable but things really need to appear bigger, so I also played about with the dpi, this does make things bigger and a better match for the screen, even though the device doesnt actually have a screen itself.
I ve done both these mods with several apps and modding the build prop and I always get "sorry systemGUI has stopped", constantly - when you close it, it opens again straight away. Clearly settings doesnt like these mods, so I m trying to work what I need to change so it DOES accept them.
How I can successfully mod the setting.db and get this working at the correct aspect ratio and a dpi that is suitable for use on a low res screen ?
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May 26, 2014
I have an Allwinner A10 clone (Kurio 7), it is designed for kids but otherwise a standard android tablet. After hours of googling I rooted and installed CWM & Gapps (not included in the stock ROM). So far so good. The stock ROM was causing issues with some apps, it needed to go.
I flashed CM10 and it worked but no touch screen. It needed a compatibility flash to make it work. You can guess what's coming. I picked the wrong one and now the device does the following:
Reboot loop
Black screen (backlight though)
PWR+Vol up no longer gets to recovery
Vibrates constantly between reboots (due to wrong patch I'm guessing)
ADB picks up the device for a split second between reboots but "adb reboot recovery" does nothing. Even when using wait command. Tried "fastboot flash recovery cwm.img" after wait command, no luck. Is there anything else I can try?
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Jul 9, 2012
I have a problem regarding my software update on my Sony Ericsson Xperia Arc, I did all steps regarding this PC Companion application for updates, a last step when i tried to turn on my phone, it is constantly showing logos of Sony and Xperia, I wait for a several minutes because it is saying that process of turning on is process which lasts several minutes, but now more than our passed, just that logos are happening...
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Aug 6, 2013
I have been trying to reinstall the OS on X10 using the Sony PC comp and also tried with the Sony Update service but get stuck at the same stage in both.
Everything goes ok till downloading the files from the internet i.e preparatory stage. It then tells me to remove and turn off the phone and reattach while continuously pressing the back key (IMAGE 01). It says to select USB connected and mount the SD card. I am following the instructions to the T but nothing forward happens. I have repeated it over 50 times but no reward. It just does not go into the next stage of installation even after waiting 30-45 mins but sends out an error (Image 2)
I thought maybe xrecovery, OS Monitor, superuser, Antivirus might be interfering so I removed them too. Has rooting got anything to do with it?
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Jan 29, 2012
Just recently I flashed my Wildfire with Cyanogenmod 7 and so far it's an awesome ROM, although I miss a few things from Sense.Just yesterday I noticed that on my Cyanogenmod 7 I can't seem use custom ringtones. Let me explain.
I deleted all the profiles and only the Default one is present and selected, it does not override anything.
Then I installed "Rings extended" because that seemed to work really good on stock ROM and selected to use it as the default ringtone picker.
It works fine, but the problem is, when I go to "Setttings -> Sound -> Phone ringtone" and select my ringtone using "Root explorer", or any other option available, it does select it and I can play it when I tap it, but it DOES NOT play when someone is calling me - instead it plays the first system ringtone.
Same thing happens with the notification sound and an SMS sound (Messaging -> Settings -> Notification settings -> select ringtone).
Now I tried to create a "ringtones" folder and "notifications" folder and put my rings there. The system ringtone picker detects them but again - does not play them.
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Dec 29, 2012
I bought a cheap A-13 MID of the internet and flashed a firmware for another variant common problem with these devices so i have no touchscreen and the usb has snapped of tried soldering it but was unsuccessful.
I have recovery installed but only way i can use it is through novotools but need touch screen.
So i need a way to flash firmware through sdcard on boot (Can be done, can't find guide though)
Or a script that will run reboot-recovery.sh on boot from sd or maybe emmc
Or that will run when the sd is mounted so that if i insert an sd card into the device with reboot-recovery.sh script on it it will reboot to recovery
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Oct 27, 2010
My girlfriend's Moment has started having issues sending text messags.Sometimes when she attempts to send a msg it gives a Code: 96 error and doesnt send so she retries multiple times and then sometimes it eventually sends through those multiple times and the person receiving get the txt like 5 times. What is this error and how do i fix it? Its using the stock messaging app.
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Jun 12, 2012
I tried to root my One X by doing the on first for not losing my data and installing BusyBox and SuperSU. But my problem is, when I ejected my USB from the phone all these weird data appeared on the top-right side of my screen.. and it keeps changing.
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Nov 19, 2012
I used this tutorial to root my phone: [URL] .......
Before rooting, I had a working / reliable wifi connection. Now, it's gone.
Could rooting the phone have caused this problem? I followed the instructions to the letter (and am rooted successfully).
Whenever I turn on wifi, it fails to locate ANY networks ("unable to scan networks") and turns itself off.
I've tried using the fix described here: [URL] .......
Soft reset, factory reset, root, deletion of specific settings files so that they repopulate ... NOTHING works.
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