On the remote control, input the factory engineer sequence code: .
Unplug the TV from the power outlet and insert the USB drive into the TV's USB port. Press and hold the physical Power button on the TV (not the remote). tpdnt72563pb781 firmware install
: A progress bar or flashing standby light should appear. Do not turn off the power or remove the USB during this process. On the remote control, input the factory engineer
Please provide: