This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 16 September 2020 |
| Upload Date | 08 September 2020 |
| File Name | iPhone_4.0_64bit_14.0_18A373_Restore.ipsw |
| File Size | 4.11 GB |
| SHA256sum | f52562049182547ca503070e00a0f00db0687a8ac486fa45776e418fab438718 |
| MD5sum | 1176e28cc9d3520d1ce427e9d32bdebd |
| SHA1sum | 41d3f7044d8a3c42725663ec0bd09b120b3e6aee |
| Identifier | iPhone8,4 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_14.0_18A373_Restore.ipsw and press Enter.