After last week release of iOS 26.4.1, Apple today stopped signing iOS 26.4. Here’s what that means.
Apple no longer signs iOS 26.4 installations
How he saw it MacRumorsApple stopped signing iOS 26.4 today, meaning it is now impossible to downgrade from iOS 26.4.1 to the previous version of the system.
Apple generally stops signing older versions of iOS for one of two reasons: either the current version is considered stable enough or when the updated version of the system fixes serious security flaws present in previous versions.
When Apple released iOS 26.4.1, the release notes only mentioned that the build “provides bug fixes for your iPhone.” Likewise, the company security website said that there were no CVE entries (essentially unique identification codes for security bug fixes) published for iOS 26.4.1.
Following the release of iOS 26.4.1, users noticed that the update fixed an iCloud sync error, but that’s what is currently known about the system,
Be that as it may, if you had been thinking about downgrading from iOS 26.4.1 to iOS 26.4 for whatever reason, it seems like you missed your chance.
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