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How do I get latest/updated remotes for my Apple TVs?
Apple TV 4K, tvOS 15
Question marked as
You may get software updates for the Apple TV box as described in: Update your Apple TV - Apple Support. That may also include firmware updates for the remote, if anything changes and if applicable.
If you want a different remote, then you’ll have to buy one: Buy a Siri Remote - Apple TV accessories - Apple Store online.
You will have to pair any replacement remote: Pair or link your Apple TV remote - Apple Support.