This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | Invalid Date |
| Upload Date | 22 January 2010 |
| File Name | iPhone1,1_3.1.3_7E18_Restore.ipsw |
| File Size | 0.22 GB |
| SHA256sum | ae27cb853cb57ba679f576400bee71ffe689ccd55763383ec8b9c6f422874e4e |
| MD5sum | b8aebb134d92298adced1a22dfac6df2 |
| SHA1sum | eab23a7f8d2a17cb71046c50fc5f67ec390a3c2b |
| Identifier | iPhone1,1 |
cd ~/Downloads.idevicerestore -e iPhone1,1_3.1.3_7E18_Restore.ipsw and press Enter.