LG G4 H815 Stock KDZ firmware: H81520c

This is the LG G4 H815 Stock firmware Ver H81520c in KDZ file format.

You can download it now from LG Server. Click on download link to grab the firmware.

Download H81520c.kdz


*LG will remove the old kdz file when there is a new software Update. please contact us when you cannot download the file from above links.

*PLEASE do not use a browser to download the kdz file from above link. Because LG has made some changes in its server settings, You need use XDM download manager or other tool to download the kdz file from LG server, LEARN HOW TO SOLVE BLANK PAGE ISSUE,. check here.


To flash this firmware onto your LG G4 H815, please use LG’s latest firmware flashing tool – LG UP. Download and install both files from below link.



If you experience any issues with the LG UP software and the H81520c kdz, Please let us know in the comments area below.

*Notes, We are not affiliated with LG Official.