This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 05 March 2024 |
| Upload Date | 28 February 2024 |
| File Name | iPhone15,3_17.4_21E219_Restore.ipsw |
| File Size | 7.42 GB |
| SHA256sum | 19640fecd4ea742a2471e57f020f1be1967a635a8634bcc5f383c5147084e401 |
| MD5sum | 1278cf052e97a49a291b8c0a21f7f7dd |
| SHA1sum | 19bf9b0084e64041e39504e93bbc286c9aefa879 |
| Identifier | iPhone15,3 |
cd ~/Downloads.idevicerestore -e iPhone15,3_17.4_21E219_Restore.ipsw and press Enter.