This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 14 December 2020 |
| Upload Date | 09 December 2020 |
| File Name | iPhone13,1_14.3_18C66_Restore.ipsw |
| File Size | 5.12 GB |
| SHA256sum | 0296504051dba6017c215add31bb4061309302efd0037019fad3af0fbd0e7987 |
| MD5sum | 8694cdd8b5a7cf350fe520aee6f6eda1 |
| SHA1sum | 3ec17e140cb792e69b277245e053ec4b2fabc780 |
| Identifier | iPhone13,1 |
cd ~/Downloads.idevicerestore -e iPhone13,1_14.3_18C66_Restore.ipsw and press Enter.