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 12.1.2 (16K534) | January 22, 2019 | 1.8 GiB | AppleTV5,3_12.1.2_16K534_Restore.ipsw | Download |