If the phone detects the file, it will prompt you to update.
You have downloaded the file. Now, here is the exact process to install it without errors. download file firmware update oppo f3 nougat work
Manual Firmware Update (ColorOS 3.0 → ColorOS 3.0 / Android 7.1 Nougat) Device: Oppo F3 (CPH1609) Challenge: No OTA updates available (server-side deprecation). Method: Manual download + local upgrade. If the phone detects the file, it will prompt you to update
Place the downloaded .zip file into the root directory of your phone's internal storage (not in any folder). Install: Go to Settings > Software Updates . If the phone detects the file