How did you find the firmware sn code if you did not have the firmware installed?From another owner who installed it before LG took it down?Well before I even new about the mod i was waiting for the Dolby vision update from lg and I saw they released it then had taken the update down for some reason so found the firmware sn code so I new that firmware had Dolby vision.
When I was looking into trying to make my player region free I found that web site.
I emailed the company and ask then the process was.
So gave them my firmware version on my player and he sent me to files a firmware file that match my current one and the newer Dolby vision firmware.
The process is
Flashed firmware that matchs the current firmware on the player.
Once done go to setting update and it will flash his tweaked Dolby vision lg firmware.
All other firmware that LG release in the future will be tweaked by him and send to your player like the normal update process
Hope that make some sense