[ROOT][TWRP RECOVERY] Onda V972 Quad-core | Allwinner A31

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enr88

Senior Member
Aug 6, 2011
253
97
Palermo, Italy, Italy
No, you need to edit file install-recovery.sh and replace /sdcard/ with /storage/emulated/0/

Ok, i've edit the file install-recovery.sh , but it's the same. ...stuck at terminal emulator
ymagymap.jpg


I tried to reboot into recovery, but is the stock recovery and not the custom. ..
Inviato dal mio GT-I9300 con Tapatalk 2
 
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ankar84

Senior Member
Jan 23, 2013
73
82
Novosibirsk
TWRP 2.5.0.0 for Onda V972 Android 4.2.2

Hi, Everybody!
I still don't understand how Onda mount internal sdcard in recovery. When you mount data partition, you can find sdcard in /data/media/0, but I can't use it, because it's not block device.
Anyway I build TWRP 2.5.0.0 for Android 4.2.2 with only External microSD support.

Installation
Recovery partition in 4.2.2 now is nandd, so you can install recovery with command
Code:
su
cat /sdcard/recovery.img > /dev/block/nandd
be sure to have recovery.img in /sdcard root
you always can boot into recovery with command
Code:
/system/bin/reboot recovery

PS
If somebody can help with sdcard in 4.2.2 I always ready to cooperate!
 

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STEVE_MARS

Senior Member
Feb 8, 2009
658
578
Valencia
Hi, Ankar.
After install the new TWRP my Onda is in bootloop, and it´s imposible shut down. If hold power button, he´s reset, not shut down.
Any idea for it?
This is the first time that I bricked off a Allwinner :confused:
 

ankar84

Senior Member
Jan 23, 2013
73
82
Novosibirsk
Hi, Ankar.
After install the new TWRP my Onda is in bootloop, and it´s imposible shut down. If hold power button, he´s reset, not shut down.
Any idea for it?
This is the first time that I bricked off a Allwinner :confused:
No, you didn't bricked your Onda! Yesturday I had the same problem. You need to push power button till tablet shuts down. And then very quick push home button. On your computer you need to do usual Phoenix Suite stuff. And now, when you hold home button you plug usb cable and do a short presses to power button till Phoenix Suite start to flash it. Don't worry! I will help you anyway...
The main quistion is how you get bootloop.. I think you copied recovery.img not in nandd...
 

enr88

Senior Member
Aug 6, 2011
253
97
Palermo, Italy, Italy
Hi, Ankar.
After install the new TWRP my Onda is in bootloop, and it´s imposible shut down. If hold power button, he´s reset, not shut down.
Any idea for it?
This is the first time that I bricked off a Allwinner :confused:

Mine working fine, but i've a bootloop with the twrp beta1..but now with this new version all is ok.
For resolve the bootloop you should flash with phoenixsuit;)

Inviato dal mio GT-I9300 con Tapatalk 2
 

STEVE_MARS

Senior Member
Feb 8, 2009
658
578
Valencia
Thanks a lot!
jejeje, I need three hands, one for each button and for USB wire :silly:
I think that the cause had been because I copy with root explorer recovery´s files, my computer not recognized Onda internal SD.
I´ll check it again, after that my history second chapter, jeje.
Thanks again :good:
 

Strypes84

Member
May 4, 2010
38
5
Minneapolis
Thanks for this, so far looks good on the A31 Onda V972 v2 that I have, only problem I see is that I can't seem to mount the Internal SD card via USB. The menu comes up, and the selection of the card comes up, but either I'm blind or there is no button to actually start the mount. Any help would be great! Thanks in advance.
 

STEVE_MARS

Senior Member
Feb 8, 2009
658
578
Valencia
Fabulous, ankar84 !!!!!!!

It´s working, and after modifiy nand in updater.script, my new ROM 4.2 based work successfully !!!!
Tomorrow make changes to better perfomance, and upload to my blog.
Thanks, thanks hundreds, millions of thanks :highfive:
 
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zcink

Senior Member
Jun 29, 2007
1,518
347
Middle Earth
Okay, I just got my Onda V972 32gb tablet today.

Rooted went fine.

Then installed the TWRP recovery in post #1.

Installed fine.

Booted into recovery and tried to do a backup of stock rom to internal SD.

Failed.

Then when I tried to reboot it says no operating system.

Stuck on 4 core boot screen. Held power button till it turned off.

Now the tablet will not boot. Nothing. Dead. Bricked?

No power will not turn on.

What do I do now?

Please Advise.

Thanks!



Update: After doing extensive research I used PhoenixSuit and flashed the latest V972Cor4-V2_v2.3 .img file and it worked. Its in Chinese but I do have a bootable rom now.
 
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  • 14
    Hello, Everybody!
    CAUTION : I'm not responsible for any damage to your device.Use at your own risk
    I want to introduce to you a Team Win Recovery Project 2.4.1.0 for Onda V972.
    I think it will be usefull and for Onda V812, and V971, maybe other A31 tablets.
    That TWRP works on 32 Gb version of Onda V972.

    Installation TWRP Recovery on Onda V972
    Before installing TWRP, you need to get root. All latest stock firmware comes with root, you need only install Superuser or SuperSU from Play Market
    Download the Onda_V972_TWRP.zip from that post and extract it to any folder on your computer.
    Copy all three files from your computer internal disk (ONDA_MID on you computer and /sdcard on tablet)
    Install the application Terminal on the tablet and run it.
    From the terminal emulator enter the following command:
    Code:
    su
    Press Enter. Allow access to the application or SuperSU SuperUser
    Code:
    busybox sh /sdcard/install-recovery.sh
    Press Enter. This command installs new recovery to your tablet.
    Code:
    busybox sh /sdcard/reboot-recovery.sh
    Press Enter. This will load the device mode recovery.
    You can also use the standard way of loading in recovery - While the tablet is off press Home button and holding it press the Power button untill 4 core logo appears.

    If something goes wrong, you need to flash the firmware via Stock PhoenixSuit and during flashing select "YES" to the question about formatting.

    It is not bug free version, there is a error: Unable to mount '/recovery' I will try to fix all bugs.
    I repeat: Use it on your own risk!

    Credits:

    Thanks to Dees_Troy and all TWRP team for great work!
    Thanks to darkrickpr from slatedroid for base TWRP
    Thanks to hariprasadiit for his CWM port and his post.
    9
    TWRP 2.5.0.0 for Onda V972

    TWRP 2.5.0.0 for Onda V972
    What's new in 2.5.0.0:

    Special Note: If you are running a custom theme, the changes in 2.5.0.0 will likely not be compatible with your theme.

    Added scrollable partition lists for mount, backup, restore, wipe, and storage selection
    Add new SliderValue GUI element for selecting brightness and screen timeout (thanks to Tassadar)
    Re-work AOSP and TWRP code to improve license compatibility between GPL and Apache
    Added official theme for 1080x1920 portrait devices (HTC DNA, HTC Butterfly, Oppo Find 5, Sony Xperia Z, etc)
    Fixed a problem with directory permissions on split archive backups
    Fixed a problem with md5 verification of backups
    Added a search function to libtar (thanks to kokotas)
    Improve handling of XML errors (fix permissions)
    Fixed handling of subpartitions
    Improvements to recovery.fstab flags
    Fixed a problem with decryption not being able to locate the decryption key in some situations
    6
    TWRP based on lastest 2.4.4.0 for Onda V972 by ankar84

    Well. On my main forum 4pda.ru nobody wanted to test latest stable version of TWRP. Apparently everyone is busy updating the firmware to version 2.0. So, I decided to publish TWRP stable version here. But, please note, I have no positive results of using this version of TWRP for 32 GB version of the tablet.
    TWRP based on lastest 2.4.4.0 for Onda V972 by ankar84
    Download: Ya.Disk | Mega

    Differences between TWRP and CWM Recovery
    • Graphical user interface with full touch control.
    • Batch patches (up to 10p in the queue).
    • Customizable backup/restore. You can choose which partitions to backup/restore if you want to use compression and generate md5-sum set their own names backup and delete unwanted right from recovery
    • Displays the time (time zone adjusted separately), battery.
    • Saving settings of the recovery on microSD-card.
    • Built in Terminal Emulator.
    • The ability to connect the two cards to the computer as a USB-carriers.
    • Built-in file manager, with copy, move, delete, rename, change permissions.
    • A detailed log file.
    • Theming support.

    TWRP based on latest stable version 2.4.4.0
    Internal and External memory are mounted properly.
    Internal memory installed in the /sdcard
    External Memory installed in the /external_sd
    You can store backups on a Internal and External memory as well.
    External card is automatically mounted
    Checked backup and restore - work

    Team Win Project site
    Compile manual
    Thread on XDA
    4
    TWRP_Onda_v972_ver02

    Hi again.
    After various checks, really mount internal memory like external.
    Where say "using internal memory" show the contents of external SD.
    not if I explain well...
    Hi, Steve!
    I take this opportunity to thank you for the excellent work SuperNova!
    As regards that TWRP, I told, that it`s like an alpha version with a lot of bugs, and not everything working propertly. I just tested installing custom rom (SuperNova 3.1 and Iberica v.2) and it`s worked. And on my forum I asked people who have 32 Gb version of tablet if they can to install custom on their tablet, and they confirmed, that it`s work pretty good.
    Just want to clarify a bit more on that as is currently working of that alpha version of TWRP.
    When you boot into TWRP without external microSD card your internal memory (/sdcard on tablet and ONDA_MID on computer) will be Internal Storage in Mount menu of TWRP
    When you boot into TWRP with external microSD card it will mount like a Internal Storage again, and there is no tablet real /sdcard mounted.
    I also would like to note that in the Mount menu, item Mount SDCard will not work! Never! Now we are working on fix that problem.
    But now, I made a new version, lets call it TWRP_Onda_v972_ver02 and it can mount both ext-sd and internal memory. But ext-sd you need to mount manualy, and we are working on that too.
    In new version:
    Internal Storage is a internal tablet memory (/sdcard on tablet and ONDA_MID on computer) Mounts at /sdcard
    SD-Ext is a External microSD card, don`t forget to mount it manualy. Mounts at /sd-ext
    2
    Thanks ankar84! It really had been so helpful and I had been able to install both SN & Iberica successfully :good:. Can you please guide how to update the new recovery on the earlier one. Will the new recovery overwrite the earlier one by simple installation?
    Hi, aryanitinkumar!
    New recovery always overwrite the earlier one, so there is no big manual about installing new TWRP on old TWRP.
    Today I compiled a new TWRP version for Onda V972 based on lastest stable TWRP 2.4.4.0

    The internal and external memory mounts properly.
    The internal memory is mounted in /sdcard
    External memory is installed in the /external_sd
    You can store backups on both the internal and the external memory.
    External card mounted automatically.
    Checked the backup and restore - worked great!


    But now I publised on 4pda.ru to 32Gb version owners test it on their tablets. If everything will be good, I will publish it here!
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