: You cannot use part04.rar on its own. To successfully extract the firmware, you must download all parts (01, 02, 03, and 04) into the same folder on your computer.

: The standby light (LED) should start flashing (usually red/green), indicating the update is in progress. Do not turn off the power during this time.

: Because firmware files for 4K Smart TVs can be large (often several gigabytes), they are often split into smaller volumes (e.g., .part01.rar through .part04.rar ) for easier hosting and downloading.

The file is one component of a multi-part firmware archive for Smart TVs using the MT5522S (typically the TP.MT5522S.PC822 ) mainboard . This specific board is widely used in various 4K (3840x2160) TV brands, including Starsat, Asano, and Skyline. File Overview & Extraction