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
The Oppo A9 2020 (released as Oppo A9 and A9s in some regions) is a budget-to-midrange phone with a Qualcomm Snapdragon 665 (or MediaTek variants in some markets), 4–8 GB RAM options, and an unlockable bootloader on many regional builds. Installing a custom ROM replaces the stock ColorOS with a third‑party Android build (e.g., LineageOS, Pixel Experience, HavocOS) to gain near‑stock Android, extended features, later Android versions, or performance/tweaks.
There are several reasons why users may want to install a custom ROM on their Oppo A9 2020: oppo a9 2020 custom rom work
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| Risk | Consequence | |------|--------------| | | Phone becomes unresponsive. No EDL points publicly documented for A9 2020. | | Lost IMEI | No cellular service. OPPO's proprietary tools cannot restore it easily. | | Camera failure | OPPO's camera HAL is closed-source. Custom ROMs use generic drivers – quality drops to 2MP-like. | | Widevine L3 | Netflix/Prime Video stuck at 480p (stock had L1 for HD). | | No OTA updates | Every ROM update requires manual re-flashing and data wipe. | Installing a on the Oppo A9 2020 (CPH1937)
The Oppo A9 2020 remains a popular device thanks to its solid Snapdragon 665 processor and massive 5,000mAh battery. However, as the device has reached its , many users are looking toward custom ROMs to get a taste of newer Android versions like Android 13 or 14.
For the Oppo A9 2020, which was released with Android 9 Pie and received an official update to Android 10, custom ROMs offer a potential path to experiences like Android 11, 12, or even newer versions, provided the development community has created them. Installing a custom ROM replaces the stock ColorOS
Once unlocked, you can flash an arm64-b GSI image.
If you are an advanced user looking for a project, it is possible to get a GSI running, but it should be considered a learning experience rather than a way to get a fully functional daily driver.
Oppo devices are . The Oppo A9 2020 has:
⚙️ Alternative Solution: Using GSIs (Generic System Images)