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_11.2.1_15C153_Restore.ipsw |
File Size | 2.61 GB |
SHA256sum | afbc7353b41a844b77a9f25e87f0ccb2cf7ba11a9d33524b8059d43ce8cc64cd |
MD5sum | b7b7ca626eea70cc44a95ad303e8bc1d |
SHA1sum | 62309429f83eb96041d5f3ddbae3a7580d13ee91 |
Identifier | iPhone7,1 |
cd ~/Downloads
.idevicerestore -e iPhone_5.5_11.2.1_15C153_Restore.ipsw
and press Enter.