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   Apple Releases iOS 14.5.1, iPadOS 14.5.1, macOS 11.3.1, and watchOS 7.4.1

   Josh Centers

   Oops. Apple just released iOS 14.5.1 and iPadOS 14.5.1 to fix an
   important bug in iOS 14.5 and iPadOS 14.5: if you had already disabled
   Settings > Privacy > Tracking > Allow Apps to Request to Track, you may
   not have received App Tracking Transparency prompts from apps, even if
   you re-enabled the setting. We were wondering why we couldn't get the
   likes of Facebook and Instagram to ask to track us.

   Apple also released[1] iOS 12.5.3, [2]macOS 11.3.1, [3]watchOS 7.4.1,
   all of which, along with [4]iOS 14.5.1 and iPadOS 14.5.1, fix nasty
   WebKit vulnerabilities that could lead to arbitrary code execution and
   that Apple says may have been actively exploited in the wild.

   It's likely that we'll see security updates for 10.15 Catalina and
   10.14 Mojave as well. They may be delayed while Apple fixes [5]problems
   that Security Update 2021-002 Catalina created for apps that use
   OpenCL. There is no corresponding tvOS update because tvOS does not use
   WebKit.

   Given the severity of these WebKit vulnerabilities, we recommend
   updating soon, whether or not you have already updated to one of last
   week's updates (see '[6]Apple Releases iOS 14.5, iPadOS 14.5, macOS
   11.3, watchOS 7.4, and tvOS 14.5,' 26 April 2021).

   To install the updates:
     * iOS 14.5.1, iPadOS 14.5.1, and iOS 12.5.3: Go to Settings > General
       > Software Update. iOS 14.5.1 is 135.1 MB on an iPhone 11 Pro.
       iPadOS 13.5.1 is 92.8 MB on a 10.5-inch iPad Pro.
     * macOS 11.3.1: To install the 2.4 GB macOS 11.3.1 Big Sur update, go
       to System Preferences > Software Update.
     * watchOS 7.4.1: Install the watchOS 7.4.1 update from the Watch app
       in My Watch > General > Software Update. The Apple Watch must be on
       its charger and charged to at least 50%. The update is 63.1 MB on
       an Apple Watch Series 4.

   As always, if you experience any problems after the fact, please share
   that information in the comments to help other users.

References

   Visible links
   1. https://support.apple.com/en-us/HT212341
   2. https://support.apple.com/en-us/HT212335
   3. https://support.apple.com/en-us/HT212339
   4. https://support.apple.com/en-us/HT212336
   5. https://talk.tidbits.com/t/security-update-2021-002-catalina-and-2021-003-mojave/15559/5?u=ace
   6. https://tidbits.com/2021/04/26/apple-releases-ios-14-5-ipados-14-5-macos-11-3-watchos-7-4-and-tvos-14-5/

   Hidden links:
   7. https://tidbits.com/wp/../uploads/2021/05/iOS-1451-notes.jpeg
   8. https://tidbits.com/wp/../uploads/2021/05/macOS-1131-notes.png

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