You can update firmware to the latest version through LG Hi-Fi Plus manager.

From version LG Hi-Fi Plus Manager 5.0.6:

v5.0.6 : Translations of some countries are modified.

All versions
LG Hi-Fi Plus Manager 5.0.6
September 5, 2016

Version:5.0.6

Uploaded:September 5, 2016 at 5:00AM UTC

File size:3.39 MB

Downloads:615