HOW TO FLASH CYANOGENMOD ZIP INSTALL
Here at DoryLabs we only provide the guide but only you can decide to go further and install CyanogenMod 12.1 Lollipop 5.1 on LG G3 D855.
Note: I shall not held responsible for any damage caused to your phone during and after flashing the ROM. If you want to test Android 5.1 on LG G3 you have to install this build. So for now there is only the early build of CyanogenMod 12.1. Until now is reported only issues with WiFi and Data Connection but the developer named as “LastStandingDroid” at the XDA forum says that he will update the CyanogenMod 12.1 ROM for LG G3 to a version with less bugs and stable. The ROM is not released officially by the CyanogemMod team so it might contains few bugs. So if you want to install Android 5.1 on LG G3 you have to do it using CyanogenMod 12.1. Until now there is no words for a Lollipop 5.1 update for LG G3 D855. In Android 5.0 are found some bugs that were fixed on Android 5.1. LG decided to update it’s flagship devices to Android 5.0 and LG G3 D855 was one of those devices. LG G3 is already enjoying Lollipop through the official firmware. The CyanogenMod 12.1 now is available for LG G3 and in a few steps you can install it right away.