: Use a USB flash drive formatted to FAT32 .
To update your TV software using this file, follow these standard procedures found on resources like Software-Zon and Scribd : Download MT5522 PC821 3840x2160 USB part01 rar
: Move the .img file to the main (root) directory of the USB drive; do not place it inside any folders. Initiate Update : Turn off the TV and unplug the power. Insert the USB drive into the TV's USB port. : Use a USB flash drive formatted to FAT32
Plug the TV back in and turn it on. The update should start automatically. Download MT5522 PC821 3840x2160 USB part01 rar