This firmware is not signed. This means you cannot restore to it in iTunes.
| Release Date | 29 May 2019 |
| Upload Date | 20 May 2019 |
| File Name | iPodtouch_12.3.1_16F8202_Restore.ipsw |
| File Size | 2.67 GB |
| SHA256sum | b4c76befca514a90d27d6924efa649034ca20e45721d5534dc084e149720bf38 |
| MD5sum | 3735c7200dc19218d804f71632567458 |
| SHA1sum | ab3d016677c5375940fc6cad44ee232c5f1e6047 |
| Identifier | iPod9,1 |
cd ~/Downloads.idevicerestore -e iPodtouch_12.3.1_16F8202_Restore.ipsw and press Enter.