The TV should automatically detect the file and prompt you to begin. If it doesn't, navigate to Settings > Support > Software Update > Update via USB using your remote.
Plug the flash drive into the USB port on the side or back of the TV. Download SONY KDL 32S5600 Software rar
Drag the firmware.upd file directly to the root directory of your USB drive. Do not put it inside any folders. 3. Install the Update on Your TV Power On: Turn on your Sony KDL-32S5600. The TV should automatically detect the file and