| ROM Name | Android Version | Stability | Bugs | Suitable For | | :--- | :--- | :--- | :--- | :--- | | LineageOS 18.1 | Android 11 | 85% | VoLTE, FM Radio | Daily driver with workarounds | | Pixel Experience Plus (11) | Android 11 | 80% | Camera crash in some apps | Pixel lovers | | Havoc OS 4.x | Android 11 | 75% | Bluetooth audio stutter | Customization fans | | crDroid 7.x | Android 11 | 78% | IR blaster not working | Performance seekers |
Note: None of these are perfect. The OPPO F1s lacks official Android 11 vendor support, so you will face bugs like broken VoLTE (no voice calls over 4G) and erratic GPS.
If you are ready to take the risk, follow this rigorous guide. Assume that your warranty is void, and you could brick your device. oppo f1s android 11 update download
Let’s address the elephant in the room immediately. There is no official Android 11 update for the OPPO F1s.
Install TWRP Recovery
Find an Android 11 GSI or specific ROM
Flash ROM via TWRP
Realistic outcome