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Just got my dev kit in the mail and tried setting it up. When I plug it into my TV it enters recovery mode and shows the iTunes symbol.However, when I connect it to iTunes via the provided USB cable it doesn't actually appear in the list. I tried with two laptops (one running 10.10 and one running 10.11) on iTunes 12.3. I then tried doing it through Xcode 7.1 instead but it couldn't see the device either.The only troubleshooting advice the setup guide provided was to force it to enter recovery mode but it's already in recovery mode. I've also tried basic things like resetting the Apple TV.Do I have a dud?