New Fire TV remote app buttons can be remapped with my Remapper app

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.

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Introducing Remapper, my new app to reassign the App Buttons on Fire TV Edition Remotes

How to remap the App Buttons on Fire TV Remotes with Remapper (Updated April 2021), AFTVnews

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How to Remap App Buttons on Fire TV Remotes