Oppo F3 Plus Nougat Update Forum Xda -

Unfortunately, the F3 Plus has almost zero custom ROM development due to locked bootloader and MediaTek (MT6755) chip. Only stock-based debloated ROMs exist. Share if you have ported LineageOS or Resurrection Remix – many users still waiting.

The F3 Plus supports Project Treble partially. Some users have reported Android 10 (LineageOS 17.1) runs better than Nougat. oppo f3 plus nougat update forum xda