Search for your specific device and look for a stable .
This is the safest way to manually upgrade an existing official installation without losing data.
The allows you to manually update, restore, or flash your compatible smartphone or tablet to one of Google's most stable legacy operating systems. Whether you are reviving an older device, fixing a bootloop, or installing a custom ROM like LineageOS, downloading the correct firmware ZIP file is the essential first step.
This is the general method for installing a community-developed ROM. Android 7.1.2- Download Zip File
If you are using a non-Google device or want a custom flavor of Android 7.1.2, you will likely be looking for a custom ROM Zip file.
You cannot flash a system zip file on a locked device.
The installation method differs slightly depending on whether you are using a Factory Image or a Custom ROM. Search for your specific device and look for a stable
Download both the and the corresponding GApps (Google Apps) Zip file . Step-by-Step Installation Guide via Custom Recovery
Contains the complete operating system system files. Installing it completely wipes the device.
Go to Settings > About Phone , tap Build Number seven times, open Developer Options , and enable USB Debugging and OEM Unlocking . Whether you are reviving an older device, fixing
If you own a supported Google Nexus or Pixel device, you must download the official firmware package directly from the Google Developers website. Option 2: Custom ROMs (For Non-Google Devices)
Return to the main menu, tap Install , select your Android 7.1.2 ZIP file, and swipe to flash.