Official firmware links for these models are often hosted on specialized repair forums rather than a central TCL site.
: Once complete, the TV should restart automatically. It is recommended to perform a Factory Reset (Reset Shop) from the settings menu to ensure stability .
Using the wrong firmware version for your specific PCB number can permanently damage (brick) the television. Always verify that your board number matches 40-MS86T1-MAB2HG before proceeding .
: Copy the extracted firmware file (e.g., Update.img or upgrade_loader.pkg ) to the root directory of the USB drive. Do not put it in a folder . Flashing : Turn off the TV. Insert the USB drive into the USB 2.0 port .
The file identifier refers to a specific firmware version for the series Smart TV (including models
: Users frequently exchange links for these files, though some versions (including V337) have been identified as beta versions in community discussions . Installation Procedure (USB)