: Power on the TV. The status LED should begin to blink, indicating the upgrade has started.
: Provides a Motherboard User Manual that covers installation and maintenance. Download SK708D PC821 3840X2160 MEDIASTR REF90 part01 rar
: Once the screen prompts you to remove the disk, unplug the USB and the TV will reboot. : Power on the TV
If your TV is stuck on the boot logo, you can follow this general procedure to flash the firmware: : Ensure it is formatted to FAT32. Download SK708D PC821 3840X2160 MEDIASTR REF90 part01 rar