Apple has stopped signing the previous version of its mobile operating system, iOS 16.3, just as it released new security patch notes for the latest version, iOS 16.4. This move means that users who have upgraded to iOS 16.4 can no longer downgrade to 16.3.
The change may impact users who experience issues with iOS 16.4, as they will no longer have the option to go back to the previous version. It also indicates that Apple is prioritizing the security updates included in iOS 16.4, which should be applied by users as soon as possible.
The security patch notes for iOS 16.4 reveal fixes for several critical security vulnerabilities, including a vulnerability that allowed malicious code to execute on a device through a maliciously crafted audio file. Other fixes address issues with Wi-Fi, WebKit, and kernel components.
As always, users are strongly encouraged to keep their devices up to date with the latest software updates and security patches. The inability to downgrade to a previous version may be an inconvenience for some users, but it also underscores the importance of staying current with the latest security measures. If you need help upgrading your version of iOS i-Rite iPhone Repair can help.