Boot into TWRP Recovery (Hold Power + Volume Down keys simultaneously from a powered-off state).
Transfer both zip files to your phone's external SD card or internal storage.
(like LineageOS or Pixel Experience) rather than an official Oppo release. OPPO India Community Official Update Status Original OS: Android 5.1 (Lollipop). Highest Official Version: Android 6.0 (Marshmallow). Official Update Method: Settings > System Updates to check for any official patches provided by Oppo. Important Considerations for Unofficial Firmware Oppo F1s Firmware Download - 7.1.2
Select ARM64, Android 7.1, Pico/Nano version. TWRP Recovery for F1s 2. Installation Steps (via TWRP)
This paper provides a comprehensive guide to the Android 7.1.2 Nougat firmware update for the Oppo F1s. As the device originally shipped with older Android iterations, the update to version 7.1.2 represented a significant shift in the operating system architecture, particularly regarding the ColorOS interface. This document outlines the new features introduced in this version, details the technical prerequisites for installation, and provides a step-by-step guide for manual firmware flashing. It also addresses critical safety measures to prevent device "bricking." Boot into TWRP Recovery (Hold Power + Volume
: MediaTek devices like the F1s require the SP Flash Tool for stock restoration.
If your phone is stuck on the Oppo logo (bootloop) or you are downgrading/upgrading from a major version, you need the SP Flash Tool. OPPO India Community Official Update Status Original OS:
Updating via unofficial firmware carries significant risks. It is essential to backup all data first, as flashing will wipe all personal content
originally launched with Android 5.1 Lollipop and was officially updated to Android 6.0 Marshmallow. However, the device never received an official Android 7.1.2 Nougat update from Oppo Support . To achieve an Android 7.1.2 environment, you must rely on unofficial software like LineageOS or alternative custom operating systems.
Modifying system files carries an inherent risk of bricking your device. Complete these steps before starting:
Before diving into the step-by-step instructions, you need to understand the terminology and method. The "ROM" or firmware package is a compressed file containing the phone's operating system.