Oppo A9 2020 Coloros 12 Update -

Because the OPPO A9 2020 supports Project Treble, you can install generic Android 12 or 13 GSI ROMs (like LineageOS 19/20 or Pixel Experience). However:

The phone runs on a Qualcomm Snapdragon 665 processor. This chipset lacks the optimization required to handle the complex, resource-heavy structural layers of the ColorOS 12 engine. oppo a9 2020 coloros 12 update