40-ms801a-mac2hg Firmware May 2026

The 40-MS801A-MAC2HG firmware is the specialized system software for the MS801S mainboard, commonly found in TCL Smart TV models like the TCL L48S4690FS and TCL L40S4690FS. This firmware acts as the operating system for the TV's hardware, controlling essential functions such as video signal processing, audio output, and smart features. Understanding the 40-MS801A-MAC2HG Board

40-MS801A-MAC2HG is a specific main motherboard model commonly used in TCL LED TVs 40-ms801a-mac2hg firmware

Flashing Procedure (Universal MStar Boot)

1. Insert the USB drive into any USB port (preferably USB 1 – often the white or bottom port).
2. Critical: While the TV is unplugged, press and hold the “Power” or “Standby” button on the TV itself (not the remote). Keep holding.
3. Plug the TV back into AC power while still holding the button.
4. Continue holding until you see one of the following:

   Memory: Typically equipped with 512MB RAM and 4GB Flash storage. Insert the USB drive into any USB port

   If you cannot locate the exact MAC2HG version, look for a “panel firmware” pack that includes the MAC2HG in its compatibility list. Avoid any file with “ALLMAC” or “MAC_ALL” unless verified by multiple forum posts. 40-ms801a-mac2hg firmware