This firmware is not signed. This means you cannot restore to it in iTunes.
Release Date | 08 April 2015 |
Upload Date | 04 April 2015 |
File Name | iPhone5,1_8.3_12F70_Restore.ipsw |
File Size | 1.53 GB |
SHA256sum | 2e48fd6c5a4ba5b16ee4634458d61ed970cff9bd0b56fbaf6efc07ffa305ff2e |
MD5sum | 38dd2ac5b5ad53741c028e570814efd0 |
SHA1sum | 56e4753e5850942a2090f29dfc72972704efffac |
Identifier | iPhone5,1 |
cd ~/Downloads
.idevicerestore -e iPhone5,1_8.3_12F70_Restore.ipsw
and press Enter.