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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 Update software – OPPO F1s - Android 5.1 Guide
To install Android 7.1.2 on your Oppo F1s, follow these steps:
You must have TWRP (Team Win Recovery Project) or CWM installed to flash the ROM files.
Power off the device, then hold Volume Down + Power simultaneously until the recovery menu appears.
The officially reached its end-of-life support at Android 6.0 (Marshmallow). To upgrade an Oppo F1s to Android 7.1.2 (Nougat) , users must rely on custom ROMs like LineageOS 14.1, as there is no official firmware download for this specific version. Prerequisites for Installation
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
A full system backup is critical as this process wipes all data.
Select Reboot System . The first boot can take several minutes as the system initializes. Troubleshooting Common Issues How do I want to upgrade my Oppo F1 s?
In TWRP, select Wipe and perform a factory reset. For a "clean flash," go to Advanced Wipe and select System, Data, Cache, and Dalvik. Flash the Firmware: Tap Install and select the Android 7.1.2 ROM zip file. Swipe to confirm the installation.
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 Update software – OPPO F1s - Android 5.1 Guide
To install Android 7.1.2 on your Oppo F1s, follow these steps:
You must have TWRP (Team Win Recovery Project) or CWM installed to flash the ROM files.
Power off the device, then hold Volume Down + Power simultaneously until the recovery menu appears.
The officially reached its end-of-life support at Android 6.0 (Marshmallow). To upgrade an Oppo F1s to Android 7.1.2 (Nougat) , users must rely on custom ROMs like LineageOS 14.1, as there is no official firmware download for this specific version. Prerequisites for Installation
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
A full system backup is critical as this process wipes all data.
Select Reboot System . The first boot can take several minutes as the system initializes. Troubleshooting Common Issues How do I want to upgrade my Oppo F1 s?
In TWRP, select Wipe and perform a factory reset. For a "clean flash," go to Advanced Wipe and select System, Data, Cache, and Dalvik. Flash the Firmware: Tap Install and select the Android 7.1.2 ROM zip file. Swipe to confirm the installation.
