Primarily associated with the TP.MS638.PC822 series common in various 4K Smart TV brands. Resolution: 3840x2160 (4K Ultra HD).
Hold the button on the TV panel (not the remote) and plug the TV back in. Download MS638 751 3840x2160 768M part02 rar
Release the button once the "Software Upgrading" screen appears. during this process. Important Precautions Primarily associated with the TP
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. Release the button once the "Software Upgrading" screen
Place the extracted .bin file directly into the root directory of the USB drive (not inside any folder). Flash TV: Turn off the TV and unplug it. Insert the USB drive.
Compressed RAR archive (Part 02). Multi-part archives require all parts (e.g., part01, part02) to be downloaded to the same folder before they can be extracted. How to Use the Firmware
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).