This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 20 September 2021 |
| Upload Date | 17 September 2021 |
| File Name | iPhone_5.5_15.0_19A346_Restore.ipsw |
| File Size | 5.12 GB |
| SHA256sum | 43bbc3e7fadd1053350308a6a8d33e24936d075cfb27a778774032251e5c5a1d |
| MD5sum | bee1ca0eb2dbc81624aabcb00e5b1ae5 |
| SHA1sum | 3f128b0329a0eb38981bc5b6acf6d5810f79b82a |
| Identifier | iPhone8,2 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_15.0_19A346_Restore.ipsw and press Enter.