This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 23 January 2018 |
| Upload Date | 18 January 2018 |
| File Name | iPhone_4.0_64bit_11.2.5_15D60_Restore.ipsw |
| File Size | 2.43 GB |
| SHA256sum | 7fec6ecc4f9305ce49352e049492034cc74dcc8203a2de509ae0b295de69328f |
| MD5sum | 91094841825b36fa5b2eaabb2be002ae |
| SHA1sum | 7001b33547617c9478be16d14d03366d49b9d504 |
| Identifier | iPhone6,2 |
cd ~/Downloads.idevicerestore -e iPhone_4.0_64bit_11.2.5_15D60_Restore.ipsw and press Enter.