) is exceptionally difficult because OPPO historically does not provide an official way to unlock the bootloader for this device
Unlike standard AOSP devices (Pixel, OnePlus, Xiaomi), Oppo devices utilize a complex partition scheme often referred to as the "Oplus Common" tree. oppo a9 2020 custom rom work
Go to Settings > About Phone > Tap Build Number 7 times > Developer Options > Enable USB Debugging and OEM Unlocking . ) is exceptionally difficult because OPPO historically does
commands often fail, simply restarting the device into Android. MediaTek vs. Snapdragon About Phone >