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 11.3 (15L211) | March 29, 2018 | 1.6 GiB | AppleTV5,3_11.3_15L211_Restore.ipsw | Download |