Insert the USB into the TV while it is off. Hold the power button and plug the TV into the power outlet. The standby light should start flashing, indicating the update is in progress.

Before updating, it is vital to understand that firmware for industrial boards like the TPDNT72563PB782

No universal “best firmware” exists for tpdnt72563pb782 without identifying the underlying hardware and manufacturer. :

Required if the TV is "dead" or stuck on the logo. These are typically programmed directly onto the board's EMMC chip using a programmer like the RT809H.