If you are looking for the latest available firmware or ways to improve your device's performance, here is the official and community-based information you need. Official Firmware Status
The Oppo F3 launched with (ColorOS 3.0). The final official software version provided by Oppo is based on Android 7.1.1 Nougat . Latest Official Version: ColorOS based on Android 7.1.1. oppo f3 update 80 download link
There is for the Oppo F3 (CPH1609). While some online sources use the keyword "update 8.0," the device officially stopped receiving major OS upgrades after Android 7.1.1 Nougat . If you are looking for the latest available