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 (16J602) | October 30, 2018 | 1.8 GiB | AppleTV5,3_12.1_16J602_Restore.ipsw | Download |