Starting March 30, LG G3 D855 users in the U.K. will be able to upgrade the LG G3 with Android 6.0 M OS Software Version D85530c.
The Update is so far available for 16GB model D855 (6GB) through LG mobile Support Tool or LG bridge software.
The Android 6.0 M Update is rolling out in phrase in the U.K.
Remember to check this link, If your G3 D855 model is listed, You can receive the Update via OTA or LG Tools.
If you experience any issues with the Update, please let us know in the comments below.