This is a generic guide – exact commands vary.
Even if both are available, Oppo still blocks unlock via official means. You need an . oppo a9 2020 custom rom work
Go to Settings > About Phone > Tap Build Number 7 times > Developer Options > Enable USB Debugging and OEM Unlocking . This is a generic guide – exact commands vary
If you decide to proceed, backup your NVRAM , persist , and seccfg partitions using MTK Client. Go to Settings > About Phone > Tap
or QFIL, though these are recommended only for advanced users. Available Custom ROM Options Because this device supports Project Treble
Installing a on the Oppo A9 2020 (CPH1937) is currently difficult, primarily because Oppo has blocked bootloader unlocking for this model. Without an unlocked bootloader, you cannot flash third-party recovery tools like TWRP or install custom operating systems. Current Status for Custom ROMs