40-mt56s1-mae2lg Firmware
 

The alphanumeric code is the part number for a mainboard, often referred to in the industry as a "chassis." This code is your primary identifier for finding the correct software. You will typically find this number printed directly on the TV's main circuit board.

What is printed on the back label of your TV? What specific screen issue are you currently trying to fix?

Look for the option and toggle it between On and Off to correct upside-down images.

To help find the exact variant you need, could you share the of your TV and your specific LCD panel model number ? If your TV is currently showing signs of life, Share public link

If the TV is stuck on the logo and you cannot access the menu: Unplug the TV from the power source. Plug in the USB drive containing the firmware. Hold the Power Button