Because OPPO removed the Android 8 files from their official servers, we cannot provide a direct "Download" link from OPPO (as it doesn't exist).

Compatible Android 8.0 Oreo custom ROM package and a corresponding GApps (Google Apps) package.

Oppo devices are notoriously difficult to unlock because official unlock tools were discontinued. You may need to use a paid service or an unofficial tool like for Oppo, or deep research into the specific exploit for your region's firmware.

You need a custom recovery environment to wipe your phone and install the new software files. Download the official or a stable unofficial version of . 2. Android 8.0/8.1 Oreo Custom ROM

This is the simplest method for manual update installation:

Officially, Oppo never released a stable, over-the-air (OTA) Android 8.0 Oreo update for the Oppo F3. The device officially topped out at ColorOS 3.1 based on Android 7.1.1 Nougat.

: Erase everything on your internal storage. Back up your photos, contacts, and documents to a cloud service or PC.