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 12.2.1 (16L250) | April 10, 2019 | 1.8 GiB | AppleTV5,3_12.2.1_16L250_Restore.ipsw | Download |