The was a mid-range champion when it launched, packing a massive 5,000mAh battery and a capable Snapdragon 665 chipset. However, with official software support ending at ColorOS 11 (Android 11), many users are looking toward the custom ROM community to keep their devices secure and snappy. The Elephant in the Room: Bootloader Status
. While some community development exists, it is limited compared to brands like Xiaomi or OnePlus. Current Development Status (2026) oppo a9 2020 custom rom work
It was a typical Saturday morning for 19-year-old Alex, a tech enthusiast who spent most of his free time exploring the world of Android development. He had recently purchased an Oppo A9 2020, which was a great device, but he wanted more. He wanted to unlock its full potential. The was a mid-range champion when it launched,
Installing a custom ROM on the Oppo A9 2020 (CPH1937/CPH1938) is notoriously difficult due to Oppo’s strict policy of disabling Fastboot mode and locking the bootloader While some community development exists, it is limited
| Problem | Solution | |---------|----------| | Bootloop after flashing | Wipe data & cache from recovery (stock recovery works). | | No sound in calls | Flash persist.img from stock ROM via fastboot. | | Fingerprint not working | Enroll fingerprint after setting PIN – reboot twice. | | Camera crashes | Install Open Camera or GCam mod (GCam_8.1_arm64 works). | | Battery drain | Disable “Mobile data always active” in Developer Options. |