This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 17 December 2018 |
| Upload Date | 13 December 2018 |
| File Name | iPhone_5.5_12.1.2_16C101_Restore.ipsw |
| File Size | 3.05 GB |
| SHA256sum | 696743e51780b04243d996b7f3d4fe080c7c09c0b13306c4cd5ee8f94e17b0ec |
| MD5sum | 5d9f707c5664588a07b793fecd3ff62b |
| SHA1sum | c0c29ec0a836970895fbf0d595f69674332bc05f |
| Identifier | iPhone7,1 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_12.1.2_16C101_Restore.ipsw and press Enter.