This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 24 May 2019 |
| Upload Date | 22 May 2019 |
| File Name | iPhone_4.7_P3_12.3.1_16F203_Restore.ipsw |
| File Size | 3.18 GB |
| SHA256sum | f84eeebedabbd604fff77f0782e0c19a35a3ab9c20cc33f9606daed55e9d89c7 |
| MD5sum | 01c14063eb73dc38d8d0d1ac63cbf288 |
| SHA1sum | ff876bff2a63d71ce7f926e14ba925556713fec9 |
| Identifier | iPhone9,1 |
cd ~/Downloads.idevicerestore -e iPhone_4.7_P3_12.3.1_16F203_Restore.ipsw and press Enter.