Update LG Optimus G E975 to Android 5.1 Lollipop ROM

LG Optimus G E975 users rejoice as Android 5.1 Lollipop based custom ROM is now available for your phone. Follow these instructions and get your phone updated to Lollipop.

Update LG Optimus G E975 to Android 5.1 Lollipop

Since this is a custom ROM, so make sure your LG Optimus G E975 is already rooted with CWM recovery installed. If it isn’t, follow –> Root LG Optimus G E975


  • Make a complete backup of all your important data and keep it safe.
  • Ensure that your LG Optimus G E975 is 80% or charged.
  • Download LG USB Drivers and install them on your computer.

The CM12.1 Android 5.1.1 Lollipop mentioned in this post belongs to its respective developer. We are just covering tutorial to help you in its installation which is well-written and very easy to understand. However if you damage or brick your phone, AndroidsDNA.com cannot be held responsible.

How to Update LG Optimus G E975 to Android 5.1 Lollipop ROM

Step 1: Download the custom ROM and GAPPS. For easy browsing, place both the downloaded zip files on desktop of your Computer.

Step 2: Connect your LG Optimus G E975 to your computer to transfer the download zip files to your phone SD card. [Make sure latest LG drivers are installed, otherwise your PC won’t recognize your phone]

Step 3: Turn Off your phone and boot it to recovery mode. [You can’t use touch in recovery mode, so use Volume Up and Down buttons for navigation and Power button for selection]

Step 4: In recovery mode, first tap on “wipe data factory reset” option to perform a factory reset. Once this is completed, go to advanced options and select “wipe the cache” followed by “dalvik cache” options to clear the cache.

Step 5: Go back to main recovery menu and select “Install zip from sd card” followed by “choose zip from SD card” and select the ROM zip file you have transferred to SD card in Step 1. Once ROM flashing is completed, repeat the same step for GAPPS.

Step 6: Repeat the above step for Google Apps (GAPPS) installation.

Step 7: Once the installation is completed, go back to main recovery menu by selecting “+++++Go Back+++++” option  and reboot your phone by choosing “reboot system now” option from main menu. For the first time, your phone might take little more time than it usually takes, so don’t be panic as it is normal and will be only for 1st time.

Now your LG Optimus G E975 should be on Android 5.1 Lollipop, thanks to custom ROM developers.


  1. Flavio Montero says

    i don´t understand this explication, because LG E975 no have SD Card, then how transfer the download zip files to the phone? Only have internal memory of 32 GB. Thanks.

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