Hi there I have tried updating Batocera and then commented setenv video_output "1080p60hz" and then uncommented the setenv video_output "800x480p60hz" which what I believe you meant by using my mod.
Still doesn't work but at least I get a black screen now instead of spastic static and colours, I know the screen works well since I have used it with my PC but it reports 62hz if I check the device in windows.
Sorry for the hassle, I am new to the C2 and modding the settings files or bootcode; have been trying for months and this is the second screen I got for it trying to get this to work :/
Doesn't even work with Lakka or Kodi using the same methods.
edit: oh there is still a heartbeat light indicating it's booted regardless of the screen working with it or not, hope that helps.