: With the TV off, insert the USB and hold the Power button on the TV (not the remote) until the indicator light blinks.
: Navigate to Settings > Device Preferences > About > System Update and select the local update option. Download CV960XH A50 3840x2160 Magic58 Update part03 rar
For a standard USB update (if the TV can boot to a menu or trigger an auto-update): to FAT32. : With the TV off, insert the USB
Using the wrong firmware can permanently damage your TV. Always verify that the panel resolution (e.g., 3840x2160) matches your hardware before proceeding. : With the TV off