In the dropdown menu, ensure Download Only is selected. (Do not choose Format All + Download, as this can erase your phone's unique IMEI number).
A: Stock ROM is the official OS pre-installed by OPPO. A Custom ROM is a third-party OS created by developers, which can offer new features, a different Android version, and better performance. oppo f3 nougat 711 update download patched
Step 1 — Obtain the correct patched ROM and tools In the dropdown menu, ensure Download Only is selected