Signed IPSW files can be restored via Finder, the Apple Devices app, iTunes, or idevicerestore. Unsigned IPSWs cannot currently be restored to.
Signed IPSWs
| ✓ |  | iPhone 2G | iPhoneOS 3.1.2 (7D11) | October 5, 2009 | 241 MiB | iPhone1,1_3.1.2_7D11_Restore.ipsw | Download |
Unsigned IPSWs
| ✗ |  | iPod touch 3 | iPhoneOS 3.1.2 (7D11) | October 5, 2009 | 297 MiB | iPod3,1_3.1.2_7D11_Restore.ipsw | Download |
| ✗ |  | iPhone 3GS | iPhoneOS 3.1.2 (7D11) | October 5, 2009 | 306 MiB | iPhone2,1_3.1.2_7D11_Restore.ipsw | Download |
| ✗ |  | iPhone 3G | iPhoneOS 3.1.2 (7D11) | October 5, 2009 | 242 MiB | iPhone1,2_3.1.2_7D11_Restore.ipsw | Download |