It is generally fine to disconnect and then reconnect the Fire TV power cord to reset the Fire TV. It is even listed as the first thing to try on Amazon’s official troubleshooting page. However, if doing so is inconvenient or if you want a more controlled shutdown, you can restart the Fire TV by simultaneously holding down the “Select” and “Play” buttons on the remote for a few seconds. The Fire TV will display a shutting down message and reboot.
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