In severe cases where USB updates fail, technicians may need a "NAND dump" file and a hardware programmer to flash the chip directly.

While holding the button, plug the TV back into the power outlet.

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The 40-MS801A-MAC2HG is a popular chassis used in 40-inch and 48-inch TCL Smart LED TVs. It typically supports: Full HD (1920*1080). Chipset: Often associated with the MS801S platform.

Format a USB drive to and copy the .bin file to the root directory (do not put it in a folder). Insert the USB into the TV's USB Port 1 .