 But there is an official help page on the Amazon website that, like you said, hold the left button, the menu button, and the back button at the same time. And they want you to do that when you've unplugged the Fire TV stick. So basically, you unplug the stick. Then you hold those buttons on the remote for 12 seconds. That will unpair the remote. Then you take the batteries out. Then you plug the Fire TV stick back in. It will say, make sure you see that screen that says remote cannot be detected.