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_P3_15.7.4_19H321_Restore.ipsw |
File Size | 5.17 GB |
SHA256sum | 954205b444e9f1ad1b91a017d3861242e2cc4200f52b8de2ef948f2ca5982bde |
MD5sum | ec1898c2b175cbc53564186d49f45929 |
SHA1sum | 45ab8473174bf74c9ec2e088785316d9d1fbc377 |
Identifier | iPhone9,4 |
cd ~/Downloads
.idevicerestore -e iPhone_5.5_P3_15.7.4_19H321_Restore.ipsw
and press Enter.