Assumes you have basic ADB/fastboot knowledge.

Need the latest development status? Check the XDA Developers forum for "OPPO A9 2020" – but expect few new posts. Most developers abandoned this device in 2023.

Installing a custom ROM on the is an arduous task due to OPPO's strict security policies. While the hardware—featuring a Snapdragon 665 chipset and up to 8GB of RAM —is capable of running modern custom Android versions, official software restrictions make the process nearly impossible for most users. The Core Obstacle: Bootloader Unlocking