This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 19 January 2016 |
| Upload Date | 12 January 2016 |
| File Name | iPhone8,1_9.2.1_13D15_Restore.ipsw |
| File Size | 2.00 GB |
| SHA256sum | aa75ad2b5db958eb29be2fb89c8f1053c86d85ced147144d1319c738ea37cb4d |
| MD5sum | fb86ad6278b1cf5dbecf0ef82f51e1dc |
| SHA1sum | 251bce82c833ed053176faade41e5adfa5c2c65a |
| Identifier | iPhone8,1 |
cd ~/Downloads.idevicerestore -e iPhone8,1_9.2.1_13D15_Restore.ipsw and press Enter.