Installing a can breathe new life into a device that has officially reached its end-of-life for software support. While Oppo devices are notoriously difficult to modify due to locked bootloaders, enthusiasts have found ways to bypass these restrictions to enjoy a cleaner, faster Android experience. Popular Custom ROMs for Oppo A9
The Oppo A9 is not developer-friendly. You will not find a CyanogenMod (LineageOS) nightly like on a Samsung or Xiaomi. However, Project Treble saved this phone from total obsolescence. With patience and the right GSI, you can temporarily resurrect your A9. Oppo A9 Custom Rom