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 3.1 (7C144) | September 3, 2009 | 241 MiB | iPhone1,1_3.1_7C144_Restore.ipsw | Download |
| ✗ | iPhone 3GS | iPhoneOS 3.1 (7C144) | September 3, 2009 | 306 MiB | iPhone2,1_3.1_7C144_Restore.ipsw | Download |
| ✗ | iPhone 3G | iPhoneOS 3.1 (7C144) | September 3, 2009 | 242 MiB | iPhone1,2_3.1_7C144_Restore.ipsw | Download |