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 | iPhone12,3,iPhone12,5_13.1.3_17A878_Restore.ipsw |
| File Size | 4.28 GB |
| SHA256sum | fe1b4c45ae2b945fc0a49ee5d9af4fcd800882429269bf014cdff7edeca562aa |
| MD5sum | 1866f3fe4e2a3b1c4e12fc0c25afcf4a |
| SHA1sum | b606f56ce6b71466ca82df2c98c64246ccb4a4fc |
| Identifier | iPhone12,3 |
cd ~/Downloads.idevicerestore -e iPhone12,3,iPhone12,5_13.1.3_17A878_Restore.ipsw and press Enter.