Use a tool like WinRAR or 7-Zip . Right-click on Part 1 only and select "Extract Here".
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
The software will automatically pull data from Part 4 and all other pieces to create one single file (typically a .bin or .img file). 3. Installation via USB Prepare USB: Format a USB drive to FAT32 . Use a tool like WinRAR or 7-Zip