: Ensure your TV is indeed 3840x2160 . Installing 4K firmware on a Full HD (1080p) board can cause a permanent black screen or "flipped" display.
While holding the button, plug the TV back into the power outlet.
The TV will restart automatically once the process hits 100%. Insert the USB drive into the TV. Navigate to Settings > Support or About . Select Software Update or System Update . Download CV538H 3840x2160 Myros LINXIA part01 rar
Choose or USB Update . The TV will detect the file and prompt you to begin. Important Precautions
: A power failure during the flash can "brick" the mainboard, requiring a hardware programmer to fix. : Ensure your TV is indeed 3840x2160
This guide outlines how to download and install the firmware. This specific file is typically used for manual system recovery or upgrading 4K Smart TV mainboards based on the CV538H chipset. Step 1: Download and Extract Files
For the TV to recognize the update, the USB drive must be formatted correctly. The TV will restart automatically once the process hits 100%
Turn off the TV and unplug it from the power outlet.