This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 15 October 2019 |
| Upload Date | 10 October 2019 |
| File Name | iPhone_4.7_P3_13.1.3_17A878_Restore.ipsw |
| File Size | 3.67 GB |
| SHA256sum | 27d6853b409786e02e9b0c0a3a8bcff0cccab63a63b5dd2bc0e018d62a9cfbfa |
| MD5sum | e816024db4d2d78389f0d336d88dfae9 |
| SHA1sum | 8f0623c9a52feeb92627012fa8a9731de88770ab |
| Identifier | iPhone10,1 |
cd ~/Downloads.idevicerestore -e iPhone_4.7_P3_13.1.3_17A878_Restore.ipsw and press Enter.