Signed IPSW files can be restored via Finder, the Apple Devices app, iTunes, or idevicerestore. Unsigned IPSWs cannot currently be restored to.
| ✗ | iPhone 2G | iPhoneOS 2.1 (5F136) | September 5, 2008 | 231 MiB | iPhone1,1_2.1_5F136_Restore.ipsw |
| ✗ | iPhone 3G | iPhoneOS 2.1 (5F136) | September 5, 2008 | 238 MiB | iPhone1,2_2.1_5F136_Restore.ipsw |