Using the wrong firmware or an unofficial mirror can permanently brick your device. Some users have reported side effects after this specific update, such as limited HDMI refresh rates (dropping from 60fps to 30fps). Official Alternatives
Post #6 * TV Serwis. * TV Szukam. * TCL: Szukam oprogramowania USB V8-NT67F02-LF1V509 - TV się zawiesza, potrzebuję pliku .img. Szukam oprogramowania USB V8-NT67F02-LF1V509 Download NT67F02 LF1V509 part1 rar
Primarily used for manual USB recovery when the TV's system becomes corrupted Compatible Models: Known to work with models such as the TCL U58S7806S , , and the Thomson 55UA9806 . Important Considerations Before Downloading Using the wrong firmware or an unofficial mirror