Based on the text string provided, this appears to be a specifically designed for an Android TV box.
The indicator LED (usually red/blue) will begin to flash rapidly. This means the firmware is being written to the EMMC. Download File T.SK706S.82 3840x2160-1G-8G-VITYA...
Never turn off the power during the flashing process. A power cut during an EMMC write will likely kill the board. firmware or ROM file Based on the text