This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 21 October 2015 |
| Upload Date | 16 October 2015 |
| File Name | iPhone5,4_9.1_13B143_Restore.ipsw |
| File Size | 1.56 GB |
| SHA256sum | 3f7310c0105be796b19b15f210ab14bfc250272712606eb4dc7106372d69ed57 |
| MD5sum | 7f352edc45d7bc2d475dff0a937bb5a8 |
| SHA1sum | 0bcaf617ed68e00d820bd01897bd76205c9abc56 |
| Identifier | iPhone5,4 |
cd ~/Downloads.idevicerestore -e iPhone5,4_9.1_13B143_Restore.ipsw and press Enter.