: Place the MstarUpgrade.bin file directly in the root directory of the USB drive (not inside any folders). 2. Installation Methods

While holding the button, plug the TV back into the power outlet.

: Use a USB 2.0 flash drive with a capacity of 4GB or less , formatted to FAT32 .

From here, you can select or manually trigger Main Update . Official Support Resources

Select or OK to begin the process. The TV will automatically restart once finished. 3. Accessing Service Mode