There are two primary methods to update this specific board. 1. Standard USB Update (System Working) If your TV still powers on and you can access the menu:
If possible, backup your current settings, though a firmware flash will typically factory reset the device. 40-ms801a-mac2hg firmware
While holding the button, plug the TV back into the power outlet. There are two primary methods to update this specific board
Using firmware meant for a different board version (e.g., 40-MS08BP) can permanently damage your TV. backup your current settings
In severe cases where USB updates fail, technicians may need a "NAND dump" file and a hardware programmer to flash the chip directly.
Download the correct firmware file (usually named MstarUpgrade.bin ) from a trusted source like the TCL Support Page or community forums.