macOS Big Sur 11.5.2 Update (20G95) is now available for all users!
UPDATED: 08/13
Apple just dropped the new macOS Big Sur 11.5.2 Update. Let’s find out what’s new in this update!
The only information that we have so far is this line from the update text.
“macOS 11.5.2 includes bug fixes for your Mac.”
UPDATE: Apple has updated the security updates page.
macOS Big Sur 11.5.2 This update has no published CVE entries.
The update must be related to an OS level fix.
I’m looking into the update now so we can figure out what it actually fixes.
UPDATE: Howard Oakley found that the build version of Safari increased from 16611.3.10.1.3 to 16611.3.10.1.6. He also noted a few version number changes to private frameworks.
https://eclecticlight.co/2021/08/11/what-has-changed-in-macos-11-5-2/
- 0 – New Features
- 0 – Resolved Issues
- 0 – Security Fixes
Table of Contents
- 1. Apple Links
- 2. Apple Articles of interest related to the macOS Big Sur Update
- 3. Undocumented macOS Big Sur Update changes & fixes
- 4. Big Sur 11 Final Release History
- 5. macOS Big Sur 11 Standalone Pkg downloads no longer available.
- 6. macOS Big Sur Full Installer.app
- 7. macOS Big Sur Update sizes for Intel and M1
- 8. Apple Silicon M1 Firmware Update
- 9. Intel T2 BridgeOS Update
- 10. Apple Silicon IPSW Restore file Update
- 11. Safari Update
- 12. What’s new for enterprise in macOS Big Sur
- 13. Security Content of the macOS Big Sur Update
- 14. macOS Big Sur Release Notes / Patch Notes / Changes
Click “Continue Reading” for the rest of the article.
1. Apple Links
AppleSeed Notes Link = appleseed.apple.com/
Developer Public Link = developer.apple.com/documentation/macos-release-notes
Direct Link to macOS Big Sur Patch Notes – https://developer.apple.com/documentation/macos-release-notes/macos-big-sur-11_5-release-notes
macOS Deployment References Changes – https://support.apple.com/guide/deployment-reference-macos/document-revision-history-apd04dff7069/web
2. Articles of interest & info related to the macOS Big Sur Update
- 1. None as of right now.
3. Undocumented macOS Big Sur update changes & fixes
- 1. None as of right now.
4. Big Sur 11 Final Release History
- 13. Big Sur 11.5.2 (20G95) – 8/11/21 – Current Release
- 12. Big Sur 11.5.1 (20G80) – 7/26/21 – My Release Notes
- 11. Big Sur 11.5 (20G71) – 7/21/21 – My Release Notes
- 10. Big Sur 11.4 (20F71) – 05/24/21 – My Release Notes
- 9. Big Sur 11.3.1 (20E241) – 05/03/21 – My Release Notes
- 8. Big Sur 11.3 (20E232) – 04/26/21 – My Release Notes
- 7. Big Sur 11.2.3 (20D91) – 03/08/21 – My Release Notes
- 6. Big Sur 11.2.2 (20D80) – 2/25/21 – My Release Notes
- 5. Big Sur 11.2.1 (20D74) – 02/09/21 – My Release Notes
- 4. Big Sur 11.2 (20D64) – 02/01/21 – My Release Notes
- 3. Big Sur 11.1 (20C69) – 12/14/20 – My Release Notes
- 2. Big Sur 11.0.1 (20B50) – 11/19/20 – My Release Notes
- 1. Big Sur 11.0.1 (20B29) – 11/12/20 – My Release Notes
5. macOS Big Sur 11 Standalone Pkg downloads no longer available.
Note: Starting with macOS Big Sur, Combo and Delta update pkg’s aka packages are not available as standalone downloads.
More Info – eclecticlight.co/2020/12/17/apple-has-stopped-providing-standalone-installers-for-macos-updates/
6. macOS Big Sur Full Installer.app
The full installer of MacOS Big Sur is now available.
In the link below, I have a listing and links to all of the Final & Beta versions of the macOS Big Sur Full installer.
https://mrmacintosh.com/macos-big-sur-full-installer-database-download-directly-from-apple/
InstallAssistant.pkg = Full download. Installing this package will add the full “Install macOS Big Sur.app” to your applications folder.
Link – macOS Big Sur Mac App Store
Requirements – macOS Big Sur 11 Requirements
7. macOS Big Sur Update sizes for Intel and M1
Apple Silicon M1 Update
Delta Update size for Apple Silicon M1 Mac devices. The size listed is for one update behind.
- 10. Big Sur 11.5.2 Update Size =
- 9. Big Sur 11.5.1 Update Size = 2.31GB – (3.23GB Actual)
- 8. Big Sur 11.5 Update Size = 2.93GB – (3.84GB Actual)
- 7. Big Sur 11.4 Update Size = 3.06GB – (3.96GB Actual)
- 6. Big Sur 11.3 Update Size = 2.4GB – (3.30GB Actual)
- 5. Big Sur 11.2.3 Update Size = 5.71GB – (6.42GB Actual)
- 4. Big Sur 11.2.2 Update Size = 2.44GB – (3.37GB Actual)
- 3. Big Sur 11.2 Update Size = 2.5GB – (3.43GB Actual)
- 2. Big Sur 11.1 Update Size = 3.26GB – (4.19GB Actual)
- 1. Big Sur 11.0.1 Update Size 3.66GB – (4.59GB Actual)
Intel Big Sur Delta Update
This is the update is for updating from 11.5.1 > 11.5.2
Size = 2.93GB
Intel Big Sur Update if you are more than one release behind
This is update is for updating from previous releases 11.0.1 > 11.5.2
Size = 3GB – 12.0GB
8. Apple Silicon M1 Firmware Update
This update has a new firmware update. This version number is reported in System Information under “System Firmware Version“
Apple Silicon M1 Firmware Update = NOT UPDATED – 6723.140.2
Previous Firmware Updates
- 17. Big Sur 11.5.2 – 6723.140.2
- 16. Big Sur 11.5.1 – 6723.140.2
- 15. Big Sur 11.5 – 6723.140.2
- 14. Big Sur 11.4 – 6723.120.36
- 13. Big Sur 11.3.1 – 6723.101.4
- 12. Big Sur 11.3 – 6723.101.4
- 11. Big Sur 11.2.3 – 6723.81.1
- 10. Big Sur 11.2.2 – 6723.81.1
- 9. Big Sur 11.2.1 – 6723.81.1
- 8. Big Sur 11.2 – 6723.81.1
- 5. Big Sur 11.1 – 6723.61.3
- 2. Big Sur 11.0.1 – 6723.50.2
- 1. Big Sur 11.0 – 6723.41.11
9. Intel T2 BridgeOS Update
The Version of BridgeOS for your T2 Security Chip (2018-2020 Intel Macs) was updated.
BridgeOS version = NOT Updated – 18.16.14759.0.1
Previous T2 Bridge Updates
- 20. Big Sur 11.5.2 = 18.16.14759.0.1
- 19. Big Sur 11.5.1 = 18.16.14759.0.1 – Build version 13
- 18. Big Sur 11.5 = 18.16.14759.0.1
- 17. Big Sur 11.4 = 18.16.14663.0.0
- 16. Big Sur 11.3.1 = 18.16.14556.0.0 – Build version 29
- 15. Big Sur 11.3 = 18.16.14556.0.0
- 14. Big Sur 11.2.3 = 18.16.14347.0.0 – Build version 5
- 13. Big Sur 11.2.2 = 18.16.14347.0.0
- 12. Big Sur 11.2.1 = 18.16.14346.0.0
- 11. Big Sur 11.2 = 18.16.14346.0.0
- 10. Big Sur 11.1 = 18.16.13030.0.0
- 9. Previous 11.1 Beta = 18.16.13017.5.3
- 8. Previous Beta RC2 = 18.16.12560.5.1
- 7. Previous Beta 11 = 18.15.12551
- 6. Previous Beta 10 = 18.16.12402.5.2
- 5. Previous Beta 9 = 18.16.12390.5.1
- 4. Previous Beta 8 = 18.16.12380 Build Version 3
- 3. Previous Beta 7 = 18.16.12380
- 2. Previous Beta 6 = 18.16.12370.5.1
- 1. Previous Beta 5 = 18.16.10358.5.2
10. Apple Silicon IPSW Restore file Update
Apple has released the full IPSW restore file for Apple Silicon Macs. I keep track of all of them in my Apple Silicon Firmware Database
https://mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmware-files-database/
- 12. macOS Big Sur 11.5.2 = UniversalMac_11.5.2_20G95_Restore.ipsw
- 11. macOS Big Sur 11.5.1 = UniversalMac_11.5.1_20G80_Restore.ipsw
- 10. macOS Big Sur 11.5 = UniversalMac_11.5_20G71_Restore.ipsw
- 9. macOS Big Sur 11.4 = UniversalMac_11.4_20F71_Restore.ipsw
- 8. macOS Big Sur 11.3.1 = UniversalMac_11.3.1_20E241_Restore.ipsw
- 7. macOS Big Sur 11.3 = UniversalMac_11.3_20E232_Restore.ipsw
- 6. macOS Big Sur 11.2.3 = UniversalMac_11.2.3_20D91_Restore.ipsw
- 5. macOS Big Sur 11.2.2 = UniversalMac_11.2.2_20D80_Restore.ipsw
- 4. macOS Big Sur 11.2.1 = UniversalMac_11.2.1_20D74_Restore.ipsw
- 3. macOS Big Sur 11.2 = UniversalMac_11.2_20D64_Restore.ipsw
- 2. macOS Big Sur 11.1 = UniversalMac_11.1_20C69_Restore.ipsw
- 1. macOS Big Sur 11.0.1 = UniversalMac_11.0.1_20B29_Restore.ipsw
11. Safari Update
The new version of Safari was included in the macOS Big Sur update.
- 6. Big Sur 11.5.2 = 14.1.2 (16611.3.10.1.6)
- 5. Big Sur 11.5.1 = Safari 14.1.2 (16611.3.10.1.3) Same as 11.5 Update
- 4. Big Sur 11.5 = Safari 14.1.2 (16611.3.10.1.3)
- 3. Big Sur 11.4 = Safari 14.1.1 (16611.2.7.1.4)
- 2. Big Sur 11.3.1 = Safari 14.1 (16611.1.21.161.6)
- 1. Big SUr 11.3 = Safari 14.1 (16611.1.21.161.3)
12. What’s new for Enterprise in macOS Big Sur
New Enterprise Features
None at this moment.
Fixed Enterprise Issues
13. Security Content of macOS Big Sur
Apple’s main Security Document for all OS security updates.
https://support.apple.com/en-us/HT201222
14. macOS Big Sur 11.5.2 (20G95) Release Notes
Apple did not release Patch Notes for the 11.5.2 update.
I can’t connect to a Logitech BT Adapter with Big Sur 11.5.2. I’m not sure if I could with prior versions. Just got a Mac mini M1 and updated the OS.
Thoughts?
My uni learning portal isnt wrking since the update .
The update broke communication with Antelope Discrete audio interface on my pro tools rig. Needless to say, I’m out of work until I can get it working again. PITA
The last version introduced a bug that made the volume up and down keys temporarily freeze video. I saw this in Chrome using YouTube this week, but 11.5.2 made it work flawlessly again.
Thanks for the information.
One of the things I’ve noticed about 11.5.2 is that, since I installed it my multi-monitor support through the plugable USBC three display docking station (ud-ultcdl) is broken.
Is there any way I can rollback the update back to 11.5.1?
Thanks in advance
Chris that dock uses DisplayLink right? Did you try to reinstall the app?
Yes I did, I even tried the latest version of the app
I wonder if they fixed the multimonitor bug on the 16″ macbook pro’s, that results in them throttling from overheating. Going to give it ago.
Noticed Big Sur 11.5.2 brought back the “Skip” button to the Notification panel in Music. Missed that…
Now if they can compact the ALBUM cover art under Song view, that would be great… there’s about 3in or real estate to work with now