While manufacturers often provide these files to sellers, you can find the 800x600 USB firmware through these community and technical sources:

If the screen turns on but the display looks incorrect (e.g., distorted colors), you may need to adjust the in the Service Menu: Universal LCD LED TV Controller Driver Board - Manuals.plus

: Links for various T.SK105A.03 resolutions, including 800x600, are often shared in technical guides like those from CiklonElectro or specialized YouTube tutorials .