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

[enr88]

That's right, because in install-recovery.sh there is /sdcard/recovery.img and you need to change it to /storage/emulated/0/ everywhere and try.

I just try this. .see the picture above

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[ankar84]

I just try this. .see the picture above
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No, you need to edit file install-recovery.sh and replace /sdcard/ with /storage/emulated/0/

 

[enr88]

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

I tried to reboot into recovery, but is the stock recovery and not the custom. ..
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[ankar84]

so, I installed 4.2.2 and still can't understand which partition for recovery.

 

[enr88]

so, I installed 4.2.2 and still can't understand which partition for recovery.

unfortunately I can't help you.. anyway thx for your work

 

[ankar84]

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

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

/system/bin/reboot recovery

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

 

[enr88]

Good work mate, finally i've recovery on beta 4.2.2

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[STEVE_MARS]

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

 

[ankar84]

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

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]

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

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

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[STEVE_MARS]

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]

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]

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:

 

[skippie17700]

Supernova 4.2 is ready?

sent from ONDA V972

 

[STEVE_MARS]

I think in a new name, Supernova is Jelly Bean 4.1 and (is a secret, jeje) Jelly Bean 4.2 :victory:

 

[tcampomanes]

Should we change the script?

thanks

 

[ankar84]

Should we change the script?

All instructions in that post.
So, if you want to install TWRP with script, yes, just change partition for recovery to nandd

 

[tcampomanes]

All instructions in that post.
So, if you want to install TWRP with script, yes, just change partition for recovery to nandd

Thanks ankar84 , work fine in onda v972 with firm 4.2.2 beta.

 

[zcink]

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.

 

[enr88]

Ehy ankar,i'm installing the firmware v3.0 4.2.2 and i do the command cat / proc/partitions...this si the result, it's different than the 4.2.2 v2.3beta

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