Android 5.1 Lollipop ROM for Xiaomi Redmi 1S

Manually Install Android 5.1 Lollipop CM12.1 Unofficial ROM on Xiaomi Redmi 1S smartphone

Xiaomi Redmi 1S, one of the best budget Android smartphone from Xiaomi can be updated to Unofficial CM12.1 Android 5.1 Lollipop custom ROM. The ROM gives the taste of latest firmware Android 5.1 which was released by Google recently. CWM Recovery should be installed on your smartphone in order to flash CM12.1 ROM and Gapps on your device. So check the below quick pre-requisites and then directly head to tutorial on upgrade Redmi 1S to Unofficial CM12.1 Android 5.1 Custom ROM.

Xiaomi-Redmi-1S price 2015

Xiaomi Redmi 1S includes specifications like 4.7-inch HD display, 1GB RAM, Powered with 1.6GHz Quad Core Snapdragon 400 processor, has dual SIM card support and packs with 2000mAh battery. There is 8MP primary camera with LED Flash and is accompanied with 1.6MP selfie camera.


  • Take backup of all important data present on your smartphone. You can use third party Android apps for taking valid backups by downloading from Google Play Store.
  • The device should have atleast 50% of battery to continue with the update process.
  • USB Debugging mode should be enabled on your smartphone. Follow the path: Settings > Developers Options > USB Debugging to enable the option.
  • Make sure CWM recovery is installed on your Redmi 1S smartphone. If not check here to install.

Xiaomi Redmi 1S Android 5.1 Lollipop update

How to Update Xiaomi Redmi 1S to Unofficial CM12.1 Android 5.1 Lollipop ROM:

Step #1: Download unofficial CM12.1 Android 5.1 Lollipop ROM and Gapps on your device SD card.

Step #2: Install CWM recovery on your Redmi 1S Android Smartphone.

Step #3: Now reboot your device into Recovery mode.

Step #4: Check here How to Flash Zips files using CWM recovery and complete the flashing of ROM and Gapps on your device.

Step #5: Yeah there you go! Just reboot the device and start using the CM 12.1 ROM based on Android 5.1 Lollipop OS.

Any trouble while flashing the ROM on your Xiaomi Android device, then let us known in the below comment section. Stay connected with us as we will be updating with latest firmware update and root guides for Redmi 1S smartphone.

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