Once you have all parts downloaded (e.g., part1.rar through part4.rar ):
Firmware for the CV338H-A42 board is often hosted on community forums or file-sharing sites like 4shared. 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. Once you have all parts downloaded (e
until the progress bar reaches 100% and the TV restarts. Download CV338H A42 1366x768 SANYO USB part04 rar