This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 28 January 2020 |
| Upload Date | 22 January 2020 |
| File Name | iPhone_4.7_P3_13.3.1_17D50_Restore.ipsw |
| File Size | 3.73 GB |
| SHA256sum | 3bae67e44b80301175dc704093f8e00f58c336d67ea4d9721d8a237c33adbcfa |
| MD5sum | 29378b2a98c1fb17a4091061f2f91265 |
| SHA1sum | 75e89db5e92c1fb1b1f0b572e14bac14d7bdf311 |
| Identifier | iPhone9,1 |
cd ~/Downloads.idevicerestore -e iPhone_4.7_P3_13.3.1_17D50_Restore.ipsw and press Enter.