Use this IPSW signing checker to find iPhone or iPad firmware listed as signed in the latest 4macos snapshot. Choose the exact model and compare the build number before opening a secure Apple-hosted download. Apple can stop signing a build at any time. A signed IPSW is not a guarantee that you can downgrade, keep your data, or restore the device successfully.
Last checked: Oct 27, 2026, 04:25 UTC. This tool reports signing from the last successful firmware snapshot, not a live Apple verification. Signing may change without notice. Being signed does not guarantee a downgrade or a successful restore.
The device name and hardware identifier must match your device. For older, unsigned releases and troubleshooting steps, use the full Apple Firmware Center.
What does signed IPSW mean?
Signing means the last collected data reported that Apple was accepting that restore build for the selected model. The signing state can change between checks. Make a backup before restoring and confirm model compatibility.
Where are older firmware versions?
The Apple Firmware Center includes older unsigned release metadata. An unsigned IPSW normally cannot be restored through the standard Apple restore process.