Press and hold the on the TV panel (not the remote) while plugging the power cord back in.
: 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
: 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. Press and hold the on the TV panel