This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 14 June 2021 |
| Upload Date | 09 June 2021 |
| File Name | iPhone_5.5_12.5.4_16H50_Restore.ipsw |
| File Size | 2.97 GB |
| SHA256sum | 1b8771c1a32e6a5527e1749f1d43e019e025baa677efe79b532caa3b8d66fa59 |
| MD5sum | 1bd096af4a998a139e94f2896802951d |
| SHA1sum | 1a11cfcabe14653a5df3077992c017f77d412c63 |
| Identifier | iPhone7,1 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_12.5.4_16H50_Restore.ipsw and press Enter.