Place the firmware file (often allupgrade_338_xxx.bin or similar) into the root directory of the USB—do not put it inside any folder. Update: Power off the TV. Insert the USB drive into the TV's USB port.
Wait for the process to reach 100%. The TV will restart automatically. Download CV338H A50 1920x1080 USB Tested part01 rar
Release the button once the "Software Upgrading" progress bar appears on the screen. Place the firmware file (often allupgrade_338_xxx
You can often change the resolution or boot logo via the Service Menu by pressing Input + 2580 on your remote. Download CV338H A50 1920x1080 USB Tested part01 rar
This download contains the (rar format). File Name: CV338H_A50_1920x1080_USB_Tested_part01.rar Installation Instructions (USB Method)