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Location services and navigation apps map accurately without signal drops. 2. Display and Performance
The remains a popular mid-range smartphone, but as official software support from Oppo has ended, installing a custom ROM is the best way to breathe new life into the device .
The story of Aurora, the custom ROM, served as a testament to what could be achieved when enthusiasts came together to create something from scratch. It showed that even an underdog device like the Oppo A9 2020 could be transformed into a beast with the right combination of hardware, software, and community effort.
Before installing a custom ROM on your Oppo A9 2020, it's essential to take the following precautions:
[Your Name/Tech Blog Name] Date: [Current Date] oppo a9 2020 custom rom work
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).
This document outlines the technical process, challenges, and requirements involved in developing Custom ROMs for the Oppo A9 2020 (codename: ). Due to Oppo’s security architecture and partition layout, this device presents significant hurdles for aftermarket development. This write-up covers the device tree structure, kernel source requirements, and the specific workarounds necessary to bypass ColorOS limitations.
The only semi-reliable method (as of 2025-2026):
Before searching for ROMs, check these 3 points: Location services and navigation apps map accurately without
: Cellular data, VoLTE, Wi-Fi, and Bluetooth operate normally on updated builds.
: Both the rear-mounted fingerprint scanner and basic face unlock function securely.
Because the A9 2020 has Project Treble support, you can try a (e.g., from PHHusson). Steps:
This is the single biggest hurdle. The exact method can vary, but a common approach for MediaTek-based OPPO devices involves using tools like MTKClient on GitHub or other specialized unlockers. The story of Aurora, the custom ROM, served
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.
So, does custom ROM work? But not in the traditional "download a ZIP and flash it via TWRP" way. Instead, the Oppo A9 2020 relies on Project Treble and GSIs (Generic System Images) .
There have been reports of permanent bootloader locks being implemented in newer security updates, making it even harder for advanced users to bypass these restrictions. 2. Available Software & Alternatives
Go to Settings > About Phone > Tap Build Number 7 times > Developer Options > Enable USB Debugging and OEM Unlocking .