Could not update my apple tv

What is your model Apple TV?

Identify your Apple TV model - Apple Support

Find your Apple TV model number - Apple Support

What is its current version system software?

If there is a newer version system software available for your model Apple TV, but the update won’t complete, then:

• Check your network connection. Try ethernet if you tried Wi-Fi before. Restart your router if needed. Try on a different network if you can.
• If the update is in progress but doesn’t seem to advance for a long time, then contact Apple Support before you restart or unplug.
• For other issues, contact Apple Support.

Update your Apple TV - Apple Support