: Select "Install from storage device" and locate your file. : The first boot may take 5–10 minutes. 🚀 Benefits of Android 7.1.2 Nougat Upgrading to a 7.1.2-based firmware provides: Split Screen : Run two apps simultaneously. : Improved battery saving during standby. App Shortcuts : Long-press icons for quick actions. : Updated library for messaging. 🛑 Disclaimer

: A bloatware-free experience compared to older ColorOS versions. Firmware Details Oppo F1s (A1601) Android Version: 7.1.2 (Nougat) File Type: Flash File (.zip) Tool Required:

You must first unlock the device's bootloader to allow third-party software installation. Custom Recovery:

You flashed a modem-incompatible firmware. Re-flash the correct 7.1.2 firmware for your region. If issue persists, restore a NVRAM backup (advanced).

The Oppo F1s originally ran Android 5.1 (Lollipop) and officially received an upgrade to Android 6.0 (Marshmallow) with ColorOS 3. OPPO India Community

You will need the LineageOS 14.1 ROM zip and a compatible GApps (Google Apps) zip for Android 7.1. Step-by-Step Installation Guide

To flash Android 7.1.2, you need for Oppo F1s (A1601).