After the official version of iOS 14.4.1 was released earlier this month, Apple today stopped verifying iOS 14.4. This means that users who update to iOS 14.4.1 cannot downgrade to iOS 14.4. iOS 14.4.1 provides important security updates, which Apple previously recommended to all users to install.
The security support document shows that the update fixes a WebKit bug that may have previously allowed malicious code execution for web content to be made. WebKit is the browser engine for Safari and third-party browsers on iOS.
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Apple usually stops verifying the old version of iOS within a few weeks after pushing the official version update. iOS 14.4 supports the “camera” to recognize smaller QR codes and fixes the issue of artifacts that may appear in HDR photos taken by iPhone 12 Pro.
For some users who update to the latest iOS system, when they encounter major bugs, the downgrade method is sometimes very effective. This is why Apple will wait for a while before closing the verification channel of the old iOS system.
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