This firmware is not signed. This means you cannot restore to it in iTunes.
Release Date | 13 December 2017 |
Upload Date | 10 December 2017 |
File Name | iPhone_5.5_P3_11.0_11.2.1_15C153_Restore.ipsw |
File Size | 2.75 GB |
SHA256sum | dbcf24889a0fd1263acbac45794a2ce41bda4964b73d6d987778e57c7e16e074 |
MD5sum | 558b63c89cf43e130d8aac6c33489f55 |
SHA1sum | 9227b1fa07cd17456f435a51dcff3dccb8238a67 |
Identifier | iPhone9,4 |
cd ~/Downloads
.idevicerestore -e iPhone_5.5_P3_11.0_11.2.1_15C153_Restore.ipsw
and press Enter.