Release the button when the indicator light starts flashing, signaling the update has started.
: Place the extracted firmware file directly into the root of the USB drive (not inside a folder). Start the Update : Unplug the TV from the power outlet. Insert the USB drive into the TV's USB port. Release the button when the indicator light starts
To download the firmware for the Polarline 50PU11TC (often listed as 50PU11TC-SM Release the button when the indicator light starts