Install Android 5.1.1 Lollipop on LG G2 with CyanogenMod 12.1 ‘Nightly’ Custom ROM


CyanogenMod has official released CM12.1 ‘Nightly’ based on Android 5.1.1 Lollipop for LG G2. We are here at to help you in flashing the CM12.1 ‘Nightly’ on your LG G2. LG G2 is a most popular device with decent specification and powerful hardware specifications, the box opened device comes with pre-installed Android 4.2.2 Jelly Bean but as promised by LG it received Android 5.0.2 Lollipop updates later. No further updates released officially after Android 5.0.2 for LG G2 but now CyanogenMod has released it’s first ‘Nighlty’ build for this device, it is packed with all the latest features of Android 5.1.1 Lollipop and over all improvement in performance.

CyanogenMod not only provide latest firmware updates but also it includes a built in OTA system to provide future updates with improvements to the devices. LG G2 owner can easily flash this update, all you need is custom recovery installed in your device to flash the CM12.1 update. One thing you should keep in mind that these update are Nightly builds and you may notice minor bugs but nothing to worry about, feel free to install the CM12.1 with Android 5.1.1 Lollipop on your LG G2 d803.

How to install Android 5.1.1 Lollipop on LG G2 d803 with CyanogenMod 12.1 ‘Nightly’ Custom ROM

Before you Begin:

Disclaimer: This tutorial includes multiple operations which includes Installing Custom ROMs, Custom recovery and root. Follow the guide on your own risk, we are not responsible if you brick or damage your device however the chances of bricking a device are rare but you have to pay full attention on the complete guide to avoid any issues and difficulties while performing any of the above mentioned operation.

This tutorial is only for the Canadian LG G2 d803, flashing this ROM on any other variant may result in serious damage to your device.


  • Please ensure your phone battery should be charged at minimum 80%
  • Download and install latest LG USB drivers
  • Your device should have a working CWM or TWRP recovery installed.

Necessary downloads:

Process to install Android 5.1.1 Lollipop on LG G2 via CM12.1 ‘Nightly’ Custom ROM

In this tutorial we are using the ClockworkMod recovery flash process.

Turn of your device and boot into CWM custom Recovery menu by the hardware keys combination or using any third party app (Mostly found in Play store).

Once your device enters into CWM recovery, create a Nandroid backup of your device or follow our guide to create a Nandroid backup (this will create a backup of your complete device including current firmware) if something goes wrong you can restore your previous firmware.

Once the Nandroid process completes, navigate and select wipe data/factory reset.(this will erase your data)

Now it’s the time to flash the CM12.1 ROM on your device. Choose “install zip from sdcard” >> choose zip from sdcard & navigate to the folder in which you have copied the custom file and select it.

Select “yes” to confirm install, wait for a few minutes till the file is completely installed in your device.

Once done with the above step, now apply the same process with the installation of Android 5.1.1 Lollipop Gapps.

Wait for the installation process to complete. The first boot up may take 5-7 minutes.

If your device is taking longer then 7-10 minutes then follow this guide to to fix this issue 

That’s it! Enjoy the latest firmware Android 5.1.1 Lollipop custom ROM on your LG G2 d803. If you have any query feel free to contact us by posting your queries in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.

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