Signed IPSW files can be restored via Finder, the Apple Devices app, iTunes, or idevicerestore. Unsigned IPSWs cannot currently be restored to.
| ✗ | Apple TV 4 (2015) | tvOS 9.0 (13T396) | October 29, 2015 | 922 MiB | AppleTV5,3_9.0_13T396_Restore.ipsw | Download |