Upgrading or reinstalling the firmware on your TCL Smart TV is the most effective way to fix software glitches, improve system performance, and unlock new features. Whether you are running Android TV, Google TV, or Roku TV, having the right firmware file can be a lifesaver.
Look for a sticker on the back of your TV. It will list the "Model No." (e.g., 55S425 or 65R635). Check the Settings Menu: Download Tcl Firmware For All Models
Go to Settings > System > Software Update > Local Update . Safety Tips Never turn off the TV during the update process. Upgrading or reinstalling the firmware on your TCL
Ensure the firmware matches your region (e.g., North American models use different software than European models). It will list the "Model No
Unplug the TV from power. Press and hold the physical Power Button on the TV (not the remote). While holding, plug the TV back in. Release when the "Upgrading Software" message appears.