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_5.5_13.1.3_17A878_Restore.ipsw |
| File Size | 3.57 GB |
| SHA256sum | 20c23ae0eb94b9086b1edf57aa628f92a47420c0cce658e55fa4f923ef248251 |
| MD5sum | 77979361f4f0e7d5b0dd628fea403cc8 |
| SHA1sum | 1a12f5377e263233b2d50cf509f646206e3083c3 |
| Identifier | iPhone8,2 |
cd ~/Downloads.idevicerestore -e iPhone_5.5_13.1.3_17A878_Restore.ipsw and press Enter.