If you're encountering problems -- namely an incomplete download or an inability to boot -- when trying to update your Apply TV to version 5.1.1, there's a solution in sight. It turns out that there's a bug with updating the device over ethernet, so if you've been unable to get 5.1.1 downloaded on a wired connection, disconnect the cable and connect to a Wi-Fi network, then try again. You should be golden.
In the event that an incomplete download of the firmware has left your Apple TV unable to boot, you can connect the device to your computer using a micro USB cable and do a tethered restore. Just make sure you have iTunes running and you'll see the Apple TV p