Hold the button on the TV panel (not the remote) and plug the TV back in.
Flashing incorrect firmware can "brick" your TV mainboard. Always verify the Panel Number (found on a sticker on the back of the LCD panel) matches the firmware description. Download MS638 751 3840x2160 768M part02 rar
Use a tool like 7-Zip to extract the contents. You must have all parts of the RAR set present to extract the actual firmware file (usually named allupgrade_ms638_sos.bin or similar). Hold the button on the TV panel (not
Firmware is panel-specific. Using firmware for a different screen model can result in a "mirror" image, inverted colors, or a blank screen. or a blank screen.