Since "Part 4" indicates a split archive, you must ensure you have (Part 1, 2, 3, and 4) in the same folder before extracting, or the file will be corrupted. Common Sources for this Firmware:
Search for "LCD LED TV Repair" groups; technicians frequently share multi-part RAR files there. Basic Installation Steps: Format your USB: Use a drive 4GB–16GB formatted to FAT32 . Download MS338 PB801 1366x768 512M REF35 part4 rar
Often host bin files for these specific RTD/MSD chipsets. Since "Part 4" indicates a split archive, you
Place the .bin file in the root directory of the USB (not in a folder). Flash: Power off the TV at the wall. Insert the USB. Often host bin files for these specific RTD/MSD chipsets
If you are looking for the firmware for a 1366x768 resolution display with 512M RAM, you are likely trying to recover a TV that is stuck on the logo or experiencing software errors.