This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 24 September 2019 |
| Upload Date | 17 September 2019 |
| File Name | iPhone12,1_13.1_17A844_Restore.ipsw |
| File Size | 3.83 GB |
| SHA256sum | 6664a56a6fe01024de1d527e2245c0560158d15cb395f844acb6e602b27aad8b |
| MD5sum | a6bf9d0ed9a182afa4a0c71c6eedae67 |
| SHA1sum | c7241c63208bd99aa6c372175fbf9f77f132b332 |
| Identifier | iPhone12,1 |
cd ~/Downloads.idevicerestore -e iPhone12,1_13.1_17A844_Restore.ipsw and press Enter.