Hold the or Reset button on the TV and plug it into a power source.
The file is a specific part of a multi-volume archive containing firmware for a smart television. This particular firmware is designed for the TP.SK506S.PB802 mainboard, commonly found in Akai TVs and other brands like Asano, Novex, and Hartens. Key Specifications & Identification Mainboard (Chassis): TP.SK506S.PB802. Resolution: Full HD ( ) [User Query].
The standby indicator should begin flashing (slowly at first, then rapidly) to signal the update is in progress.