This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | Invalid Date |
| Upload Date | 03 March 2011 |
| File Name | iPhone3,1_4.3_8F190_Restore.ipsw |
| File Size | 0.65 GB |
| SHA256sum | |
| MD5sum | e0a463bded8f5b1e076b466535b18c75 |
| SHA1sum | 5bfffd6a3b4dedd093aa2fbc0c8e6048aaadac8a |
| Identifier | iPhone3,1 |
cd ~/Downloads.idevicerestore -e iPhone3,1_4.3_8F190_Restore.ipsw and press Enter.