This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 30 September 2019 |
| Upload Date | 28 September 2019 |
| File Name | iPhone_5.5_P3_13.1.2_17A860_Restore.ipsw |
| File Size | 3.84 GB |
| SHA256sum | a3bfcc9fb673de58e7ef30826e7ad203faa33e3662b420cd83a1446433f8169b |
| MD5sum | 997a1505d9bdb4d7e3d0e5fca18278d3 |
| SHA1sum | b78c67259d476c1d10d1df4aea88944ca30de9a2 |
| Identifier | iPhone9,4 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_P3_13.1.2_17A860_Restore.ipsw and press Enter.