Select (on some models, this may just be About ). Choose About and then select System Update .
Navigate to the (gear icon) in the top-right corner.
If your manufacturer (e.g., TCL, Sony, or generic TV Box brands) provides a firmware file on their support site but not over-the-air (OTA), you can perform a manual installation: Android TV: Update Smart TV to Latest Version
Select (on some models, this may just be About ). Choose About and then select System Update .
Navigate to the (gear icon) in the top-right corner.
If your manufacturer (e.g., TCL, Sony, or generic TV Box brands) provides a firmware file on their support site but not over-the-air (OTA), you can perform a manual installation: Android TV: Update Smart TV to Latest Version