: These firmware updates are usually split into multiple parts (e.g., part01, part02). You must download all parts into the same folder on your computer before attempting to extract them.
: Right-click on part01.rar and select "Extract Here" using a tool like WinRAR or 7-Zip. It will automatically pull the data from part02.rar to create a single firmware file (often with a .pkg or .bin extension). Download 43SU128 49SU131 55SU134 Firmware part02 rar
Press and hold the on the TV panel (not the remote) while plugging the power cord back in. : These firmware updates are usually split into
Insert the USB drive into the TV's USB port (use USB 2.0 if available). Download 43SU128 49SU131 55SU134 Firmware part02 rar