Summary
To pair an Apple TV remote, first try charging it for 30 minutes and restarting it.
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If that doesn't work, make sure the Apple TV is updated to the latest version of tvOS.
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If the remote still isn't working, contact Apple Support for assistance.
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If the remote has disconnected or been replaced, it must be manually paired to the Apple TV.
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The Siri Remote can only be paired with one Apple TV at a time, and any other paired remote will be automatically unpaired.
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According to
