LG G3LG Press Kit

Prolific XDA Developer Forum members have rolled out the latest Android v5.1 Lollipop OS based custom ROM to the 2014 flagship smartphone LG G3.

The new firmware is based on the CyanogenMod CM12.1 series. It is developed by popular software programmer, going by the moniker Life Walker and brings lot of customisations features, performance enhancements and improved UI to the LG G3.

We would like to remind users that this is an experimental beta version with some untested bugs in it. We advise our readers to go through the whole tutorial before going forward with the installation.

Prerequisites (Things to remember before installing the CyanogenMod ROM):

  1. Make sure the device is rooted before going forward for custom ROM installation
  2. This new CyanogenMod CM12.1 Android 5.1 Lollipop firmware has to be installed on the LG G3 (D855) model only ; if tried on other devices, it might get bricked [To check your device model: Go to Settings >> About phone >> model number]
  3. Installation of custom ROM requires clearing of memory in the smartphone, so make sure to back all the data by installing Clockwork Mod (CWM) Recovery/ TWRP in the smartphone.
  4. Make sure to install USB drivers on the PC, or else your smartphone (LG G3) will not be recognized by the computer.
  5. Make sure your device has more than 80% battery, or else there is a chance of smartphone getting temporarily bricked if the installation process is interrupted mid-way.

[Disclaimer: This procedure is very technical and should be performed by a person with sound knowledge of rooting (or manual software installation) Android devices. If the step-by-step installation process is not followed properly, there are chances of the smartphone getting bricked or being permanently irreparable. International Business Times, India Edition cannot be held responsible for any damage or claims from readers if the procedure does not yield the required results or if the smartphone is bricked. Hence, users are advised to proceed with caution.]

Downloadable files:

CyanogenMod CM12.1 Custom ROM for LG G3 (D855): HERE

Google Apps: HERE

Tutorial: Step-by-step installation procedure of CyanogenMod [unofficial] Android 5.1 Lollipop CM12.1 custom ROM on LG G3-

Step 1: After downloading the Android 5.1 Lollipop CM12.1 custom ROM and Google Apps files in to your PC; connect LG G3 to PC via USB cord.

[Note: Before plugging the phone to the computer, be sure that you have installed USB driver software, if not, click HERE to download the firmware]

Step 2: Then, place Android 5.1 Lollipop zip file and Google Apps .zip file into the phone's SD card memory. [Note: Users are advised to paste the .zip file in SD card root, not in any other folder.]

[Note: Before installing the custom software, be sure that the device must have been rooted and has installed ClockworkMod Recovery tool.]

Step 3: Now, turn off the device and disconnect from the PC.

Step 4: Then perform the regular Recovery Mode sortie by press holding 'Volume (Down)' and 'Power' buttons.

Step 5: After entering the RECOVERY mode, clear the phone memory, by choosing 'wipe data/factory reset' option.

[Note: use 'Volume' keys to navigate and 'Power' button to select options, while operating under Recovery Mode]

Step 6: Now, clear the cache memory by selecting 'wipe cache partition'

Step 7: Then to go back to ClockworkMod recovery, and select 'advanced' and tap 'wipe dalvik cache' [Note: This step is optional, but many recommend this procedure so that user will not face boot loops or any other errors in the middle of custom ROM installation]

Step 8: Again come back to main recovery screen and then tap 'install zip from SD card'

Step 9: Then tap 'choose zip from sdcard' and go to Android 5.1 ROM .zip file in SD card and enter the installation process. Repeat the same procedure to install Google Apps [Note: use 'Volume' keys to navigate and 'Power' button to select options]

Step 10: Once done with the installation process, navigate to '+++++Go Back+++++' and re-start the device by opting 'reboot system now' seen in the recovery menu.

Now, your device (LG G3) will take at a few minutes to complete the booting process.

Users then head to Settings >> select 'About phone' to confirm the installation of CyanogenMod Android v5.1 Lollipop CM12.1 custom ROM.

[Credits: XDA Developer Forum members- Life Walker & vinu.gwen ]