This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 19 November 2020 |
| Upload Date | 17 November 2020 |
| File Name | iPhone13,1_14.2.1_18B121_Restore.ipsw |
| File Size | 5.05 GB |
| SHA256sum | de216bf97e27f43a0c370505787ca95fbb82025c506f2a1ebe044fb9d54a6a6a |
| MD5sum | f5a925d681eb63a49bb41d6117336ea5 |
| SHA1sum | f481f5752809456df89f1e1dc71737b5e5deba5c |
| Identifier | iPhone13,1 |
cd ~/Downloads.idevicerestore -e iPhone13,1_14.2.1_18B121_Restore.ipsw and press Enter.