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.
How to remap the App Buttons on Fire TV Edition Remotes with Remapper : r/ fireTV
Can I remap the buttons on my Vizio Smart TV remote? Q. Can I remap the buttons on my Vizio Smart TV remote? A. Yes and no, you can't remap the
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