Move the extracted file to the root directory of your USB drive. Do not put it inside any folders, or the TV won't recognize it. Flashing Process: Turn off the TV and unplug the power cord. Insert the USB drive into one of the TV's USB ports.
Download all parts of the RAR archive. Right-click the first part and select "Extract All" ; this will automatically combine the parts (including part03 ) into the final firmware file (usually ending in .bin or .img ). Download CV338H A42 1366x768 Sony 4GB 512MB part03 rar
Multi-part RAR (ensure you have all parts, including part03 , before extracting) How to Install CV338H-A42 Firmware via USB Move the extracted file to the root directory
If you need to adjust the logo or resolution after installation without a new file, you can access the by pressing Input + 2580 on your remote. From there, you can toggle mirror mode, change the resolution, or switch between brand logos like Sony or Samsung. Insert the USB drive into one of the TV's USB ports
Use a completely empty USB flash drive formatted to FAT32 .
Once the light stops flickering or the TV reboots, remove the USB drive and check your system settings. Service Menu Tips
Plug the power cord back in. On many boards, the update starts automatically, and the standby light will flicker rapidly.