This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 27 March 2023 |
| Upload Date | 16 March 2023 |
| File Name | iPhone_5.5_15.7.4_19H321_Restore.ipsw |
| File Size | 5.05 GB |
| SHA256sum | 820b041a03b4d4942ba8433812b94c90e54161f5b433e25c0301ad9a7239918b |
| MD5sum | c8679ceab05d48198000607e7fac4aae |
| SHA1sum | d6fbf2d5c095d0fcc281569ea1796268ba6b5cb0 |
| Identifier | iPhone8,2 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_15.7.4_19H321_Restore.ipsw and press Enter.