I took another approach with my Pronto and Apple TV. You may know this already - it's possible to teach the Apple TV remote commands. Basically, I took an unused remote, and had Pronto learn its commands. Then, I had Apple TV learn the commands from my Pronto. Another nice thing about the "learn" feature of the Apple TV allows is that it provides more buttons than even an Apple remote has. This approach was the most reliable for me. The one disadvantage is if you have more than one Apple TV - each Apple TV needs to be taught the IR commands from the Pronto. Also, I never did have a solution for Power Off. I relied on the Apple TV falling asleep after idling for a while. I'll try the Power Off command mentioned above.