: A power failure during the flash can "brick" the mainboard, requiring a hardware programmer to fix.
For the TV to recognize the update, the USB drive must be formatted correctly.
There are two common ways to initiate the update depending on whether your TV can still boot into the menu. Download CV538H 3840x2160 Myros LINXIA part01 rar
While holding the button, plug the TV back into the power outlet.
: Ensure your TV is indeed 3840x2160 . Installing 4K firmware on a Full HD (1080p) board can cause a permanent black screen or "flipped" display. : A power failure during the flash can
Keep holding until you see a "Software Upgrading" progress bar on the screen. during this time.
Choose or USB Update . The TV will detect the file and prompt you to begin. Important Precautions While holding the button, plug the TV back
Turn off the TV and unplug it from the power outlet.