Install Android 5.1.1 Lollipop on LG G3 D855 with CyanogenMod 12.1 ‘Nightly’ ROM


Install Android 5.1.1 Lollipop on LG G3 D855 with CM12.1 Nightly ROM. The ROM is based on Android 5.1.1 Lollipop and all the features are working great, CM12.1 Nightly build are updated on daily based and every new update comes with minor improvements and bug fixes. In the below description we have mentioned the whole procedure to install the latest CM12.1 ‘Nightly’ ROM based on Android 5.1.1 Lollipop on LG G3 D855. You can also follow our previous post on the flashing CM12.1 updates on several devices, in this guide we are using the same method which we already used for other devices.

Overall the CM12.1 ROM is smooth and major features are working fine but as it’s a Nightly build so you may experience some bugs but don’t hesitate just go ahead and flash the Android 5.1.1 Lollipop firmware with CM12.1 Nightly ROM on your device. The CyanogenMod ROMs has a built in software update support via OTA system for future updates. Below we have mentioned the complete procedure along tools needed to flash the Custom ROM on your device.

How to install Android 5.1.1 Lollipop on LG G3 D855 with CyanogenMod 12.1 ‘Nightly’ ROM

Disclaimer: This tutorial includes multiple operations which includes, Installing Custom ROMs. 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.


Please ensure your phone battery should be charged at minimum 80%

Download and install latest USB drivers

Your device should have a working CWM or TWRP recovery installed.

Download Android 5.1.1 Lollipop build specified for your LG G3 D855 from the below provided links

Download (264.9 MB)

Download Android 5.1.1 Lollipop Gapps

Process to install Android 5.1.1 Lollipop with CM12.1 ‘Nightly’ ROM on LG G3 D855

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 

You can also: Download and install Android 6.0 Marshmallow Google Now Launcher

That’s it! You have successfully installed Android 5.1.1 Lollipop via CM12.1 Nightly release on your LG G3 D855, experience the latest features of Android 5.1.1 Lollipop via CM12.1 custom ROM on your device. 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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