This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 19 September 2019 |
| Upload Date | 27 August 2019 |
| File Name | iPhone_4.7_13.0_17A577_Restore.ipsw |
| File Size | 3.41 GB |
| SHA256sum | 08bf27809d547e04c3e0fa0cb4bbd93decc2a18f521d029f2591de6b56f4b589 |
| MD5sum | ac35a6c49fc2d339fe3ef629adde6c8a |
| SHA1sum | f1102c5f779bee40a79bac17d7ef48b2e6996a02 |
| Identifier | iPhone8,1 |
cd ~/Downloads.idevicerestore -e iPhone_4.7_13.0_17A577_Restore.ipsw and press Enter.