Update And Restore iPhone Using iPsw Firmware [MacOS Big Sur]
| Risk | Likelihood | Consequence | | :--- | :--- | :--- | | | Moderate (if SEP incompatible) | Device stuck in recovery mode. Can often restore to latest signed iOS. | | Baseband failure | Low (on certain models) | No cellular service. Requires re-restore to signed iOS. | | Tethered downgrade | High for very old iOS versions | Phone won't boot without computer connection. | | Data loss | 100% | Restoring erases all user data. Always backup first. | unsigned ipsw restore tool free
: These typically offer a free trial for entering/exiting recovery mode, but require a paid subscription to perform actual restores or downgrades. Update And Restore iPhone Using iPsw Firmware [MacOS