While holding the button, plug the TV back in and continue holding for about until the software update notification appears.
To manually update your TV using a USB drive, follow these steps: Download TCL L55C2US Firmware part04 rar
The TV will restart automatically once the update is successful. While holding the button, plug the TV back
firmware is available on Up-4ever . This model is a 55-inch Android Smart 4K LED TV. While holding the button
Press and on the TV (not the remote).