This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 08 November 2023 |
| Upload Date | 03 November 2023 |
| File Name | iPhone12,8_17.1.1_21B91_Restore.ipsw |
| File Size | 6.79 GB |
| SHA256sum | 828e46146401c150ae7b28c9036cc6890f344debb54d4c68206bf9f0b9bc2d39 |
| MD5sum | add90a33d1d1b3918ca239efb36708b2 |
| SHA1sum | 895e9e313d338d07fdffb000bfea16ccd8615b30 |
| Identifier | iPhone12,8 |
cd ~/Downloads.idevicerestore -e iPhone12,8_17.1.1_21B91_Restore.ipsw and press Enter.