This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 13 May 2019 |
| Upload Date | 08 May 2019 |
| File Name | iPhone_4.7_12.3_16F156_Restore.ipsw |
| File Size | 2.96 GB |
| SHA256sum | e1a1f663e73ffdd659676867bb8bcf9f1f993d3390e6fedd70fdf54e4ad5235d |
| MD5sum | f089a7865e601e15f21b753eae04c05d |
| SHA1sum | ad243ce75b684183320f7ea339957abc745c332a |
| Identifier | iPhone7,2 |
cd ~/Downloads.idevicerestore -e iPhone_4.7_12.3_16F156_Restore.ipsw and press Enter.