If you are attempting the update, do not rely on random YouTube tutorials. Visit the official thread:
The Oppo F3 launched in 2017 running Android 6.0 Marshmallow under Oppo's custom ColorOS 3.0 skin. For a device marketed as the "Selfie Expert," its hardware was capable, but its software longevity remained a major pain point for users. While official Android 7.0 Nougat updates from Oppo were limited, delayed, or region-locked, the XDA Developers forum became the ultimate saving grace for this handset. oppo f3 nougat update forum xda
Modifying your phone's software requires unlocking core restrictions. XDA developers recommend the following tools: If you are attempting the update, do not
Manual flashing is risky if you are not experienced with MediaTek (MTK) flash tools. While official Android 7
A custom recovery interface used to wipe partitions and flash custom software zip files.
The XDA Developers forum was the definitive source of information for the Oppo F3's Nougat update. It was the place where the release was first announced, where the update files were hosted, and where a community of users came together to dissect every new feature, bug, and workaround.
What (like battery life, camera quality, or root access) matters most to you?