This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 23 January 2023 |
| Upload Date | 11 January 2023 |
| File Name | iPhone_5.5_P3_15.7.3_19H307_Restore.ipsw |
| File Size | 5.17 GB |
| SHA256sum | 941db760b0bbd99c3099cb5e1b361ae2df907bbcba72287f1e04e261078a2eb7 |
| MD5sum | 1b26f6634e398f27fdc7e8cbbe34b03d |
| SHA1sum | 6ba576ea3cf7086b143d804655111f6f06ed94c9 |
| Identifier | iPhone9,4 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_P3_15.7.3_19H307_Restore.ipsw and press Enter.