I have a 2nd gen Siri Remote that I purchased from Apple. It was working with my Apple TV HD Model A1625. Now with the most recent TVOS updates, it no longer will Pair/Learn the A1625 Box.
Apple TV HD, tvOS 15
Read here how to restart the remote and pair again if needed.
If your Apple TV remote isn't working - Apple Support
The Siri Remote (2nd generation) requires tvOS 14.5 or later, and should work fine with the most recent tvOS update (15.5.1). It would work with the last three models Apple TV (A1625, A1842, A2169).
Read here how to restart the remote and pair again if needed.
If your Apple TV remote isn't working - Apple Support
The Siri Remote (2nd generation) requires tvOS 14.5 or later, and should work fine with the most recent tvOS update (15.5.1). It would work with the last three models Apple TV (A1625, A1842, A2169).
Try following the troubleshooting steps here:
Set up the Apple TV Remote on your iPhone, iPad, or iPod touch - Apple Support
Apple TV Remotes That can Learn/Pair with Apple TV HD Model A1625
