: Ensure the TV remains plugged in throughout the entire update process. A power loss during a firmware flash can damage the internal motherboard.
: The TV will automatically flash the new firmware. Once complete, it will reboot. Critical Safety Tips
Updating the firmware on a TCL L55D2730 can be done through a simple network update or a manual USB installation if the TV won't boot properly. 1. Automatic Network Update
: Move the extracted firmware file directly to the root directory of your USB drive (not inside any folders). Initiate Installation : Power off the TV and unplug it from the wall. Insert the USB drive into the TV's USB port. Press and hold the Power button on the TV (not the remote).
: If you cannot find the official firmware file, contact the TCL After-Sales Team or local hotline to request the correct version for your region. How to update the software on an Android TV - TCL Support
: Select Network Update . The TV will scan for the latest available version.
While holding the button, plug the TV back into the power outlet.