I can't use gsi in oppo a31 / CPH 2015

[katsu12]

I installed gsi in oppo a31 and it can't boot. So I installed vbmata, it didn't work. What should I do in twrp?

But I have unlocked the bootloader and can install twrp successfully.

 

[jatin.rewri]

have you formatted device through twrp

 

[Djihads]

please share the twrp build