: For many users, GSIs are the only path forward. These are universal ROMs that can run on devices with Project Treble support (which the A9 2020 has). While they allow for newer Android versions (like Android 13 or 14), they often suffer from bugs in hardware-specific areas like the camera or fingerprint sensor.
: If your phone is experiencing issues, you can download the Official Stock ROM (Flash File) to restore or unbrick it using the MSM Download Tool.
Who doesn't want that Pixel look? Pixel Experience brings the Google Pixel launcher, wallpapers, icons, and camera features to the A9 2020.
To understand why installing a custom ROM like LineageOS or Pixel Experience is not a straightforward task on the OPPO A9 2020 , you have to look at the security architecture implemented by the manufacturer: oppo a9 2020 custom rom work
Getting custom ROMs to work on the (CPH1937) is highly restricted because Oppo does not provide official bootloader unlocking methods for this model . Released in late 2019, the device features a reliable Snapdragon 665 processor and a 5,000 mAh battery. However, Oppo's strict firmware locks block standard development.
Once the custom ROM boots, you aren't done. Here is how to fix the remaining issues:
Go to Wipe > Advanced Wipe. Select Dalvik/ART Cache, Cache, System, Vendor, and Data. Swipe to wipe. (Do not wipe Internal Storage if your ROM file is saved there). : For many users, GSIs are the only path forward
Until an exploit is found and the source code is fully available, the custom ROM scene for the Oppo A9 2020 remains in a state of deep freeze.
The dual stereo speakers and Dolby Atmos tuning are proprietary to ColorOS. While audio playback works on custom ROMs, specialized sound stages require third-party root equalizers like . Prerequisites for Modification
: Search for specific device groups on Telegram or the Oppo Community for the most recent experimental builds, as these are more active than official forums. : If your phone is experiencing issues, you
The Oppo A9 2020 (codename: vanilla) features a Snapdragon chipset, which inherently makes it more developer-friendly than MediaTek-based alternatives. Because Qualcomm releases source code more freely, developers have been able to port several stable custom ROMs to this device. Popular Custom ROM options for the Oppo A9 2020 include:
However, with the correct vendor blobs extracted from the latest firmware and a modified device tree capable of handling the oppo_reserve structure, stable Android 11, 12, and 13 ROMs are technically feasible.
One of the developers, a seasoned veteran named Ethan, noticed Alex's post and offered to help. Ethan had been working on a custom ROM for the Oppo A9 2020 for months and had made significant progress. He shared his GitHub repository with Alex, and together, they began to work on the project.