| Attempt | Success Rate | Risk | |--------|--------------|------| | Install a custom ROM | < 5% | Hard brick (no recovery, no fastboot) | | Install a GSI | ~30% | Loss of RIL (calls/data), camera, fingerprint | | Keep stock, debloat | 100% | None |
If you want a phone for Custom ROMs, look for devices with unlocked bootloader policies (Google Pixel, Nothing Phone, OnePlus). For your Oppo A9, the best performance boost will simply come from debloating the stock ColorOS via ADB. Oppo A9 Custom Rom
Power users who want extensive UI customization options. | Attempt | Success Rate | Risk |