Signed IPSW files can be restored via iTunes. Unsigned IPSWs cannot currently be restored via iTunes.
✓ | iOS 18.0.1 (22A3370) | 3rd October 2024 | 9.09 GB | iPhone17,1_18.0.1_22A3370_Restore.ipsw |
✗ | iOS 18.0 (22A3354) | 16th September 2024 | 9.09 GB | iPhone17,1_18.0_22A3354_Restore.ipsw |