Users who upgraded to iOS 26.2 can no longer revert to the previous version, iOS 26.1, as Apple has ceased signing it. This change, noted by MacRumors, eliminates the possibility of downgrading, which typically occurs when a newer version is confirmed stable and addresses significant security issues.
The recent update to iOS 26.2 has patched two critical zero-day vulnerabilities, which have now become widely known. This situation increases the risk for those who may still be operating on the older version, as they are now more susceptible to potential attacks.
By restricting downgrades, Apple aims to safeguard users from reverting to a less secure system. For further updates on iOS 26.2 and its features, additional resources are available through the provided link.