Flashing a custom Nougat ROM requires precision. Follow this general blueprint derived from XDA community guides.
The Waiting Game: An Analysis of the Oppo F3 Nougat Update Lifecycle on XDA Developers Subject: Oppo F3 (CPH1609) Platform: XDA Developers Forums OS Version: Android 7.0/7.1.1 (Nougat) to ColorOS 3.1 oppo f3 nougat update forum xda
: Go to Settings > About Phone to verify your current Android version. Flashing a custom Nougat ROM requires precision
: Some early Nougat builds suffered from broken VoLTE. Check the specific XDA thread for a "VoLTE Fix" zip file to flash via TWRP. oppo f3 nougat update forum xda
: Team Win Recovery Project is the standard recovery tool.
Some early Nougat builds struggled with native VoLTE calling depending on the regional carrier.