Before you start the firmware update process:

Navigate to: .

Most failed updates happen not because of bad firmware, but because of poor preparation. Do not skip these steps.

This is the simplest method if your TV is connected to the internet. button on your remote. Navigate to the icon (gear icon) in the top right. Device Preferences (on some versions, this may be under "More Settings"). , then select System Update Network Update

Updating an older TCL panel isn't just about new menus; it’s about functional survival: App Compatibility: