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If you already have the iOS 16.6 update, you’ll no longer be allowed to go back to iOS 16.5.1, which Apple released in June. This is because the Cupertino company stopped signing the older update version, making it impossible to roll back from the newer iOS 16.6 released last week.

Apple released iOS 16.5.1 on June 21 to address a bug preventing charging with the Lightning to USB 3 Camera adapter. It also came with some security patches, including a security fix for the security flaw that Russian security software maker Kaspersky Lab discovered. According to the researchers who divulged the flaw (dubbed CVE-2023-32434), it worked via an iMessage containing a malicious attachment. It reportedly could infect a device without directly seeing the message. Kaspersky’s report added that it could lead to file modification and stealing, password extraction, and even viewing of the user’s location.

After this, Apple also released a Rapid Security Response update for iOS 16.5.1, but it led to a Safari issue. The company addressed this through Rapid Security Responses iOS 16.5.1 (c). Weeks after that, Apple stopped signing 16.5, making it impossible to roll back from iOS 16.5.1. This caused some issues among other users who reported experiencing battery issues due to the newer update since a common workaround to such bugs involves rolling back from previous update versions.

And now that Apple has stopped signing the iOS 16.5.1 update, it means users who have already installed the iOS 16.6 update are stuck in it in case new bugs surface in the coming days. Fortunately, it seems unnecessary for now since iOS 16.6 appears to be working just fine. Some users even reported that their battery life in iOS 16.6 has improved. It is not a full assurance that you will have a great battery life after installing this, but this should alleviate your battery issues compared to previous updates.

We detailed all the changes and improvements in iOS 16.6 in a separate article. You can read it here.


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