Apple on Thursday released the second beta for tvOS 9.2.1 to developers. To update, you’ll have to connect your Apple TV 4 to a computer via a USB-C cable, and install the software through iTunes or Apple Configurator.
Todays release comes a month after Apple pushed out tvOS 9.2 to the public. That was a significant update, bringing about new user-facing features such as support for Home screen app folders and Bluetooth keyboards.
From what we’ve seen thus far, 9.2.1 appears to be a much minor update, likely focusing more on bug fixes and other under-the-hood-stuff. We’re installing the second beta now, and will let you know if we spot anything new.
Reminder: jailbroken devices should not be updated, for obvious reasons.