: While still holding the power button, plug the TV back into the wall.
: Download the correct firmware for your specific model from the official TCL Support page. Once downloaded, extract the .pkg or .bin file and place it in the root directory of the USB drive—do not put it inside any folders. The Update Process Tcl Software Update Usb
Found in many North American models like the 6-Series (R635). : While still holding the power button, plug
Beyond the App: Understanding and Using the Tcl Software Update USB Method Tcl Software Update Usb
You are looking for a code like: 55R617 , 65C825 , 50S546 , or 43P725 . Write this down exactly.