Amazon Fire TV 1st Generation User Manual page 33

If you see an on-screen warning ("All wireless accessories, including the Fire TV Remote and Fire Game Controller will
not work if you continue. The Fire TV must be rebooted in order to restore wireless remote functionality") select Yes,
Disable Wireless.
To reactivate wireless network ports, restart your device by disconnecting the power cord for three
seconds, then reconnecting it again.
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