My own order of the new Fire TV remote with app buttons has, unfortunately, been delayed so I haven’t been able to test things out myself yet, but several of you have already told me that my Remapper app does work to remap the app buttons on the new remote. That certainly makes the new remote a more compelling purchase since it means you can customize which apps get opened when you press one of its app buttons.
The same restrictions for my Remapper apps exist for the new Fire TV remote as they did when I introduced the apps for Fire TV Edition television remotes. That is, you cannot remap an app button for an app that comes pre-installed on your Fire TV. That means Prime Video and Amazon Music app buttons cannot be remapped, but all other app buttons are fair game. As a reminder, because of the way my Remapper apps work, the app for the app button that you want to remap cannot be installed on your Fire TV. So if you only occasionally use Netflix, for example, but want the Netflix app button remapped, you have to decide between keeping Netflix installed or remapping the button.
I’ve updated my guide for installing and configuring Remapper to be relevant to the new remote. I’ve also added a Remapper for Disney+, since that app button didn’t exist on the Fire TV Edition remotes when I first created Remapper. As always, please leave detailed comments if you have any issues with Remapper since I’m unable to test it on every combination of Fire TV remote, device, and app button.