: Power off the TV, then press and hold the physical power button on the TV for about 10 seconds while it starts up.
: For the safest version, you can contact the TCL Hotline or check the TCL Support Page for your specific region. How to Install (USB Method)
The file "" typically refers to a TCL Smart TV firmware update . This specific naming convention is often used for software versions compatible with TVs using the MT56552 chipset. Where to Find and Download
These firmware files are rarely hosted on official consumer websites and are usually found through community-shared links or technician forums: