: Power off the TV. Insert the USB. Press and hold the physical power button on the back of the TV while plugging it back in or turning it on. Hold for about 10 seconds until the update screen appears.
If you have successfully downloaded and combined the firmware files, follow these steps to perform the update: Download TCL 32S62 40S62 USB UPDATE part5 rar
: If the USB method fails, TCL recommends using the Online Network Update or contacting TCL Support directly for the official file. : Power off the TV