Build android from source for Orange Pi 5

Ashja

Hey, I want to build android from source for the orange pi5. I have downloaded the provided files in .gz.00 formats but the instructions are unclear.
please provide some documentation or point in a direction of where to start.
Thanks

Ashja

Update since then
I followed the documentation for the orangePI4 and extracted the code into 1 place. After that files and folder structures are different for both devices.Any help would be appreciated

bluesman

It would be good to have more information about unpacking the image in order to get at what used to be called the system.img and was automatically unpacked using one of the easy to use Rockchip tools of old.