Once you have the file (usually a .zip file), follow these steps carefully.
Ensure your power source is stable. Power loss during a firmware flash permanently bricks the mainboard. Download Tcl Firmware For All Models
Settings (gear icon) > Device Preferences > About > System Update and choose Network Update TCL Roku TVs : If not connected to the internet, visit the Roku TV Update Tool on a computer, select Once you have the file (usually a
Wait for the progress bar to reach 100%. Do not unplug the power cord. Settings (gear icon) > Device Preferences > About
This is the easiest method to ensure you get the correct firmware version for your specific model directly from TCL servers. TCL Google TVs on your remote, then navigate to System > About > System update Network Update TCL Android TVs
Because TCL's official distribution channels can be fragmented, the enthusiast community has built excellent resources for finding the latest TCL firmware.
Yes, but it is risky. TCL often blocks "downgrades" for security reasons. To downgrade, you usually need to perform a Factory Reset immediately after the downgrade process begins, or use the "Force" method mentioned in Part 5. However, doing this can sometimes cause the TV to get stuck in a "Bootloop."