Samsung (Firmware is configured for Samsung's data signals/LVDS).
Place the extracted firmware file (usually named allinstall.pkg or similar) into the root directory (not inside a folder). Power Down: Unplug the TV from the wall outlet. Insert USB: Plug the drive into the USB 2.0 port of the TV. Trigger Update:
CV338H-A42 (A common smart TV universal board). Resolution: FHD (Full High Definition, 1920x1080).