Do download from random file hosts. Use official or trusted mirrors:
| Model | Oppo F1s (A1601) | |-------------|------------------------------------------| | OS Version | ColorOS 3.0 (upgradeable to 3.1) | | Android | Android 5.1 (Lollipop) / 6.0 (Marshmallow) | | Firmware type | Stock ROM (Full OTA / Recovery / SP Flash Tool) | | File format | .ozip (official) or .zip (for recovery) | firmware oppo f1s a1601
: Ensure your firmware name contains "MT" (for MediaTek). Most A1601 models use this chipset and require the SP Flash Tool for flashing. Do download from random file hosts
: A green circle/ring will appear once the flash is successful. Disconnect and reboot. Beyond Official Updates: Custom ROMs How do I want to upgrade my Oppo F1 s? firmware oppo f1s a1601