This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 20 October 2014 |
| Upload Date | 16 October 2014 |
| File Name | iPhone5,3_8.1_12B411_Restore.ipsw |
| File Size | 1.70 GB |
| SHA256sum | aead244be8231b582b14933427b22333b60f1169615eef5314d9d55dc30989de |
| MD5sum | f5979ec66b317c91d3752da12a1df88e |
| SHA1sum | 86e7b61ec70e11631ec1966fe5c9874fb3674af9 |
| Identifier | iPhone5,3 |
cd ~/Downloads.idevicerestore -e iPhone5,3_8.1_12B411_Restore.ipsw and press Enter.