Signed IPSW files can be restored via iTunes. Unsigned IPSWs cannot currently be restored via iTunes.
✓ | iOS 18.3.2 (22D8082) | 11th March 2025 | 8.98 GB | iPhone17,5_18.3.2_22D8082_Restore.ipsw |
✗ | iOS 18.3.1 (22D8075) | 19th February 2025 | 8.98 GB | iPhone17,5_18.3.1_22D8075_Restore.ipsw |