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 | iPhone10,3,iPhone10,6_12.3.1_16F203_Restore.ipsw |
| File Size | 3.38 GB |
| SHA256sum | 3cb7f1434495001d3ef2336346eabfce20f81883dd3629bdfc7598b2a65419c1 |
| MD5sum | c88f3f6cdc0b38926e15d5188894114d |
| SHA1sum | d4ba0014ae4be95ce3ada83108b23852711b346b |
| Identifier | iPhone10,6 |
cd ~/Downloads.idevicerestore -e iPhone10,3,iPhone10,6_12.3.1_16F203_Restore.ipsw and press Enter.