until the progress bar reaches 100% and the TV restarts.
Copy the single extracted firmware file (not the .rar parts) to the root directory of the USB drive. Update TV: Power off the TV and unplug it. Insert the USB drive into the TV's USB port. Download CV338H A42 1366x768 SANYO USB part04 rar
Plug in and power on the TV; many boards like the will detect the file and start the update automatically. until the progress bar reaches 100% and the TV restarts
Since you are looking for Part 4 specifically, you likely already have some parts. To avoid corruption, ensure: Download CV338H A42 1366x768 SANYO USB part04 rar