Apple TV won’t work after update
Recently updated my Apple TV and now all it does is blink. How do I resolve this issue?
Apple TV 4K, tvOS 13
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A flashing status light when it is not starting up or updating, may indicate a failure to start up properly.
Try unplugging from power for a minute. Then try again.
If the issue persists, then the software may have to be re-installed (restored). Unfortunately, with the 4K model, users can’t do that themselves through a computer. Contact Apple for an appointment.