This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 31 March 2022 |
| Upload Date | 28 March 2022 |
| File Name | iPhone13,1_15.4.1_19E258_Restore.ipsw |
| File Size | 5.98 GB |
| SHA256sum | 78cb3f1d7efacf6afcaf62dcc1ab8a336076e4933af61f81d8d81522a5bda73f |
| MD5sum | 0b0702f6b84634835c4909a88bcbb853 |
| SHA1sum | a8a65b90cda4837225d5a29d2072736fc2731455 |
| Identifier | iPhone13,1 |
cd ~/Downloads.idevicerestore -e iPhone13,1_15.4.1_19E258_Restore.ipsw and press Enter.