Settings > System > About > System Update > Network Update. Roku TV: Settings > System > System Update > Check Now. 3. Telegram Channels and Developer Forums (XDA Developers)
If your TV is stuck on the loading logo, you can force an update while the screen is black: Turn off the TV and unplug it from the wall outlet. link download tcl firmware for all models
While holding the button, plug the power cord back into the wall. Settings > System > About > System Update > Network Update