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How to download tvOS 10.2.1 beta 2 to your Apple TV
Installing the tvOS 10.2.1 beta is more complex than an iOS or macOS beta, but it's also for developers only.
Update April 10, 2017: Apple has just released tvOS 10.2 beta 2 for developers. If you already have a tvOS 10 beta installed, proceed to System > Software Updates and download away. If you've been waiting for beta 2 of tvOS 10.2.1 to get started with tvOS testing, keep reading and we'll walk you through the set up!
Apple hasn't announced a public beta for tvOS the way the company has for iOS and macOS. That means until it is released to everyone this fall, it's only available to developers. It also means installing it on the Apple TV (4th generation) is more complicated than a simple download and go. If you're a developer and you're having trouble getting the tvOS beta installed, here's what you need to do.
Unlike Apple's other operating systems, you can't back up your Apple TV; as such, Apple offers two options for updating tvOS: over the air, which just updates the system; and via USB-C, which restores the device to its factory settings.
How to install the tvOS 10.2 beta over-the-airHow to install the tvOS 10.2 beta over USB-C