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macOS Big Sur 11.2 released!!!

  • The macOS Big Sur 11.2 update improves the stability and reliability of your Mac, and is recommended for all users.


macOS Big Sur 11.2

macOS Big Sur 11.2 improves Bluetooth reliability and fixes the following issues:

  • External displays may show a black screen when connected to a Mac mini (M1, 2020) using an HDMI to DVI converter
  • Edits to Apple ProRAW photos in the Photos app may not save
  • iCloud Drive could turn off after disabling the iCloud Drive Desktop & Documents Folders option
  • System Preferences may not unlock when entering your administrator password 
  • Globe key may not display the Emoji & Symbols pane when pressed


Some features may not be available for all regions, or on all Apple devices.




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@BuXb, Apple no longer provide standalone incremental or combo updates for download. So you won't find any for Big Sur. You either update from the PrePane or download the latest full installer package through AppStore; that's it. You can look it up if you want. If you want links, look here.

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@Hervé whaaaaaooooot? So if one has several Big Sur Macs to update, either each has to dl the update, or one has to dl the full 11.4 GB installer for offline update? And that with each update???? Arent't we all supposed to minimize web traffic so save some energy, and Apple agreed to that, too?


In this context, two questions, if anybody knows (I don't have enough time these days to be fully in the loop on these things):

  1. Has Apple issued a sane (or not so sane) reason for that? I'm aware of the Intel/ ARM M1 fork, but that would just mean two different incremental + 2 different combo updaters.
  2. Somewhere someone posted a direct dl link for the full 11.2 installer directly from an Apple server. So it appears there is only ONE UB installer for BOTH archs, Intel & ARM M1? Or are they different depending on if, via App Store, I download from an Intel or from an ARM M1 Mac?
Edited by BuXb
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As I said, you can look it up but, in a nutshell:

  1. articles I read suggested that Apple made this choice in order to reduce web traffic by offering a single package rather than 3 and thereby aimed to reduce downloads. Not seen anything more official to date.
  2. yes, every Big Sur update now triggers a 2GB download and, yes, the only alternative is the 12GB installation package for offline update/upgrade.
  3. last time I saw incremental Big Sur updates was with beta versions (up to beta #6 from memory) and there were issues (downloads and installation failures). I suspect Apple may have had unresolved problems with their servers and/or (bugs) with incremental updates installation rather than an actual desire to reduce Web traffic; it couldn't be a total surprise, Apple having been pretty good with bugs in recent months but it's my own private speculation... 
  4. Sharing PrefPane offers a Content Caching option that may be used to share software updates/installation packages with other Mac computers. I guess that Administrators would be invited to use this to update their equipment set rather than perform individual downloads on every Mac.
  5. of course, there is only 1 x universal Big Sur installation package. Big Sur brought back "fat-binary" code if you want, just like in the good old days of Leopard, Snow Leopard and Lion when we had PPC and Intel code or i386 and x86_64 code. Only kernels are specific. It's not within the DNA of Apple to offer separate binary builds for different architectures:
admin@E6230 ~ % lipo -info /System/Library/Extensions/pthread.kext/Contents/MacOS/pthread
Architectures in the fat file: /System/Library/Extensions/pthread.kext/Contents/MacOS/pthread are: x86_64 arm64e
admin@E6230 ~ %
admin@E6230 ~ % lipo -info /System/Library/Kernels/kernel                                
Non-fat file: /System/Library/Kernels/kernel is architecture: x86_64
admin@E6230 ~ %
admin@E6230 ~ % lipo -info /System/Library/Kernels/kernel.release.t8020                  
Non-fat file: /System/Library/Kernels/kernel.release.t8020 is architecture: arm64e
admin@E6230 ~ %
admin@E6230 ~ % lipo -info /System/Library/Kernels/kernel.release.t8101                  
Non-fat file: /System/Library/Kernels/kernel.release.t8101 is architecture: arm64e


Edited by Hervé
Corrected the 12GB typo for download
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@Hervé great reply, learned a lot, thanks for taking the time. Just:


every Big Sur update now triggers a 12GB download

hmm, are you 100% sure? Isn't 11.1 -> 11.2 = 3.25GB? At least that's what the Software Update Pref Pane says. It'll still take me a few days until I want to update, but I'll sure save the content of /Library/Updates before it gets emptied again at the end of installation, and share the size.


What I'll also try is save that folder, then try use it to update my backup Big Sur 11.2 Beta install.

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