.rar (This is part 3 of a multi-part archive; you will likely need parts 01 and 02 to successfully extract the full firmware).

Power Supply and Display Troubleshooting Guide | PDF - Scribd

Insert the USB drive into the TV's USB port.

). This mainboard is commonly used in various 4K (3840x2160) LED TVs, including brands like Asano and Shivaki. Motherboard: TP.MT5522S.PC822 Resolution: 3840x2160 (4K Ultra HD).

A red indicator light should blink, signaling the update has started. Wait until it flashes rapidly (often changing from red to green) before removing the USB and restarting the TV.