Technicians often match firmware by the Main Board Number (e.g., TP.MS338.PC821) rather than just the TV model, as manufacturers sometimes change internal hardware during production. How to Use These Files
Plug the TV back in. On many models, you must hold the on the TV (not the remote) until a "Software Updating" progress bar appears. Download 43SU128 49SU131 55SU134 Firmware part06 rar
If you are missing the other parts of this archive, you can often find complete sets on technician-focused sites like , LaboneIT , or specialized Telegram channels dedicated to TV repair. Technicians often match firmware by the Main Board Number (e
Format a USB flash drive (8GB or 16GB) to FAT32 . If you are missing the other parts of
Are you trying to fix a specific issue like a or a frozen logo , or are you just looking for a feature update?
If you have collected all the necessary parts, follow these standard steps used by technicians on YouTube guides and support forums :
Place the extracted firmware file directly onto the root of the USB drive (do not put it in a folder). Installation: Turn off the TV and unplug it. Insert the USB drive into the TV's USB port.