Oppo has stopped releasing major Android version updates for the Oppo F3. You will not receive Android 8.0 Oreo, Android 9.0 Pie, or Android 10 via an official OTA (Over-The-Air) update.
to the PC via USB and follow the desktop prompts to search for and push the final official firmware to the device Important Warning on Custom ROMs: oppo f3 update 80 download updated
: To troubleshoot connectivity before a large download, use the code *#803# to check WiFi chipset parameters . Troubleshooting If the update fails or the device becomes sluggish: Oppo has stopped releasing major Android version updates