After extracting the multi-part RAR files, place the single firmware file (often named Update.img or a .bin file) into the root directory of the USB drive. Manual Flash Method: Unplug the TV from power. Insert the USB drive into the TV's USB port.
the physical power button on the back or bottom of the TV.
The file refers to a specific system software update for TCL Smart TVs using the 40-MS08B1-MAD2LG mainboard . This firmware is typically used for the TCL LED49S4900 series and similar smart LED models. Context & Components