I have 3.2.1-0 in my tablet and created a backup with adb before i switched from Simply International B207 to KangVIP Slim B230 like this:
Code:
adb reboot recovery
adb backup -f simply_b207.ab --twrp
There was no errors, the files are about 12 GB and data, system and boot where backed up fine as far as I remember (no errors in TWRP).
As I had some issues with KangVIP I tried to go back and first created another backup of KangVIP with adb backup. Then I tried to restore:
Code:
adb reboot recovery
adb restore simply_b207.ab
Long story short: It seems like it does not recover all partitions, only system. When I boot it still shows the old splash screen from the KangVIP ROM. After booting it shows the home screen with a permission popup in front (Huawei wants access to the phone...) which does not react. I also booted with a mouse connected, then I have a mouse pointer but can't click away the popup either.
Then I tried to restore the KangVIP backup - but same story. It only restored system partition and after booting there's a permission popup that I can't get rid of.
I assume that this version of TWRP does not work well with adb. Unfortunately I can't report a bug as it's not an official version either.
Any ideas welcome. I can also provide more debugging etc. as I still can access the phone with adb shell.