macOS Sonoma 14.2.1 Update (23C71) What’s New?

macOS Sonoma 14.2.1 is now Available!

UPDATED: 12/24/23

This article will be continually updated as new information comes in.

Apple just released macOS Sonoma’s 3rd minor release update to the public! Let’s jump in and find out what’s new.

The Sonoma 14.2.1 is a security update that addresses CVE-2023-42940.

WindowServer

Available for: macOS Sonoma

Impact: A user who shares their screen may unintentionally share the incorrect content

Description: A session rendering issue was addressed with improved session tracking.

CVE-2023-42940: Craig Hockenberry

Safari 17.2.1 – Safari was updated for Sonoma, Ventura and Monterey but does NOT address any security fixes. Must be a bug fix but Apple does not list what it is.

My macOS Sonoma 14.2.1 Update Video

macOS Sonoma Patch Notes Summary

1. New Features –
2. New OS Enhancements –
3. Security Fixes – 1
4. Enterprise Changes –
5. Safari Security (Webkit) –
6. Full installer and M1 IPSW – 14.2.1 IPSW and full installers are now available!
7. OpenCore Legacy Patcher Users – Tested good with a small 14.2 KDK download issue.
8. Kernel Debug Kit – KDK for macOS 14.2 (23C64)

Full Apple Update Release list

macOS 💻 ✅

Sonoma – 14.2.1 (23C71)
Ventura – NONE – Current release = 13.6.3 (22G436)
Monterey -NONE – Current release = 12.7.2 (21G1974)
Safari – 17.2.1 is included in Sonoma and was released as a standalone update for Ventura and Monterey.
Xcode -None – Current release = 15.1
Command Line Tools for Xcode – None – Current release = 15.1

iOS📱✅

iOS 17.2.1 (21C62) = iPhone XS and later
iOS 16.7.4 (20H240) = iPhone 8, iPhone 8 Plus, iPhone X, iPad 5th generation, iPad Pro 9.7-inch, and iPad Pro 12.9-inch 1st generation
iPadOS 16.7.4 (20H240)
iPadOS – None – Current release = 17.2 (21C62)
audioOS – None – Current release = 17.2 (21K365)
tvOS – None – Current release = 17.2 (21K365)
watchOS – None – Current release = 10.2 (21S364)

Apple released the following app updates

Pro Video Formats 2.3
iMovie 10.4
Final Cut Pro 10.7

1. Apple macOS Sonoma Links
2. Sonoma Final & Beta Release History
3. macOS Sonoma Full Installer.app
4. Apple Silicon M1 M2 & M3 IPSW Restore file Update
5. macOS Sonoma Update sizes
6. Apple Silicon System Firmware Version
7. Apple Silicon OS loader Version (iBoot)
8. Intel T2 BridgeOS Update
9. Safari Update
10. What’s new for enterprise in macOS Sonoma
11. Security Content of macOS Sonoma
12. macOS Sonoma Release Notes / Patch Notes / Changes

Click “Continue Reading” for the rest of the article.

1. Apple macOS Sonoma Links

macOS Sonoma Mac App Store download link = N/A

When Apple releases the official macOS Sonoma support links, they will be listed below.

What’s new in the updates for macOS Sonoma – https://support.apple.com/en-us/HT213895
What’s new for enterprise in macOS Sonoma – https://support.apple.com/en-us/HT213893
Apple Security Updates Page – https://support.apple.com/en-us/HT201222
macOS Sonoma Mac App Store link – https://apps.apple.com/us/app/macos-sonoma/id6450717509
macOS Sonoma features page – https://www.apple.com/macos/sonoma/
Manage upgrading to macOS Sonoma in your organization
If you see a message that macOS Server is not supported when upgrading to macOS Sonoma
Platform Security Guide – New macOS Rapid Security Response system.
Platform Guide Deployment – What’s new in Apple platform deployment

AppleSeed Notes Link = appleseed.apple.com/

Developer Public Link = developer.apple.com/documentation/macos-release-notes

macOS Deployment References Changes – https://support.apple.com/guide/deployment-reference-macos/document-revision-history-apd04dff7069/web

3. Sonoma Final & Beta Release History

16. Sonoma 14.2.1 = 12/19/23
15. Sonoma 14.2 = 12/11/23
14. Sonoma 14.1.2 = 11/30/23
13. Sonoma 14.1.1 = 11/07/23
12. Sonoma 14.1 – 11/25/23
11. Sonoma 14.0 – 9/26/23
10. Sonoma RC2
9. Sonoma RC1
8. Sonoma Beta 7 (23A5337a) – 8/30/23
7. Sonoma Beta 6 () – 8/25/23
6. Sonoma Beta 5 () – 8/08/23
5. Sonoma Beta 4 () – 7/27/23
4. Sonoma Public Beta () – 7/11/23
3. Sonoma Beta 3 () – 7/06/23
2. Sonoma Beta 2 () – 6/14/23
1. Sonoma Beta 1 () – 6/06/23

4. macOS Sonoma Full Installer.app

Apple has released the full installer for macOS Sonoma. I list all the of the Full installers in the link below.

https://mrmacintosh.com/macos-sonoma-full-installer-database-download-directly-from-apple/

InstallAssistant.pkg = Full download. Installing this package will add the full “Install macOS Sonoma.app” to your applications folder.

5. Apple Silicon IPSW Restore file Update

Apple has released the full IPSW restore file of macOS for Apple Silicon M1 Macs. I keep track of all of them in my Apple Silicon Firmware Database

Get them here –> https://mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmware-files-database/

6. macOS Sonoma Update sizes

Sonoma Delta Update

The delta update will automatically change in size for exactly what your macOS version needs.

Full update with size 12.9 GB

M1/M1 Updates

Delta from macOS Sonoma 14.2 with size =

Intel Updates

Delta from macOS Sonoma 14.2 with size =

Delta from macOS Ventura 13.6.3 with size =

Thank you DhinakG!!

7. Apple Silicon System Firmware Version

This update has a new firmware update. The version number is reported in System Information under “System Firmware Version“

Apple Silicon Firmware = Not Updated!

16. macOS Sonoma 14.2.1 = 10151.61.4
15. macOS Sonoma 14.2 = 10151.61.4
14. macOS Sonoma 14.1.2 = 10151.41.12
13. macOS Sonoma 14.1.1 = 10151.41.12
12. macOS Sonoma 14.1 = 10151.41.12
11. macOS Sonoma 14.0 = 10151.1.1
10. macOS Sonoma RC2
9. macOS Sonoma RC1
8. macOS Sonoma Beta 7 = 10151.1.1
7. macOS Sonoma Beta 6 =
6. macOS Sonoma Beta 5 =
5. macOS Sonoma Beta 4 =
4. macOS Sonoma Public Beta = No change
3. macOS Sonoma Beta 3 =
2. macOS Sonoma Beta 2 =
1. macOS Sonoma Beta 1 =

8. Apple Silicon OS loader Version (iBoot)

OS Loader Version (iBoot) also referred to as “iBoot second-stage loader”, is Apple’s stage 2 bootloader. The OS loader version will be the same as the “System Firmware Version” on the latest OS. On previous versions of macOS Monterey and Big Sur, the OS loader version will be a version behind. Example = Monterey = 7459.121.3 & Big Sur = 6723.140.2

OS Loader version = Not Updated!

16. macOS Sonoma 14.2.1 = 10151.61.4
15. Sonoma Sonoma 14.2 = 10151.61.4
14. macOS Sonoma 14.1.2 = 10151.41.12
13. macOS Sonoma 14.1.1 = 10151.41.12
12. macOS Sonoma 14.1 = 10151.41.12
11. macOS Sonoma 14.0 = 10151.1.1
10. macOS Sonoma RC2 = 10151.1.1
9. macOS Sonoma RC1 = 10151.1.1
8. macOS Sonoma Beta 7 = 10151.1.1
7. macOS Sonoma Beta 6 =
6. macOS Sonoma Beta 5 =
5. macOS Sonoma Beta 4 =
4. macOS Sonoma Public Beta = No change
3. macOS Sonoma Beta 3 =
2. macOS Sonoma Beta 2 =
1. macOS Sonoma Beta 1 =

9. Intel T2 BridgeOS Update

The Version of BridgeOS for your T2 Security Chip (2018-2020 Intel Macs) was updated.

BridgeOS version = Not Updated!

16. macOS Sonoma 14.2.1 = 21.16.2057.0.0
15. Sonoma Sonoma 14.2 = 21.16.2057.0.0
14. macOS Sonoma 14.1.2 = 21.16.1069.0.0
13. macOS Sonoma 14.1.1 = 21.16.1069.0.0
12. macOS Sonoma 14.1 = 21.16.1069.0.0
11. macOS Sonoma 14.0 = 21.16.364.5.1
10. macOS Sonoma RC2 = 21.16.364.5.1
9. macOS Sonoma RC1 = 21.16.364.5.1
8. macOS Sonoma Beta 7 = 21.16.364.5.1
7. macOS Sonoma Beta 6 =
6. macOS Sonoma Beta 5 =
5. macOS Sonoma Beta 4 =
4. macOS Sonoma Public Beta = No change
3. macOS Sonoma Beta 3 =
2. macOS Sonoma Beta 2 =
1. macOS Sonoma Beta 1 =

10. Safari Update

The new version of Safar 16 is included in the macOS Ventura update.

Safari = UPDATED!

16. macOS Sonoma 14.2.1 = 17.2.1
15. macOS Sonoma 14.2 = 17.2 (19617.1.17.11.9)
14. macOS Sonoma 14.1.2 = 17.2.1 (19616.2.9.11.12)
13. macOS Sonoma 14.1.1 = 17.1 (19616.2.9.11.7)
12. macOS Sonoma 14.1 = 17.1 (19616.2.9.11.7)
11. macOS Sonoma 14.0 = 17.0
10. macOS Sonoma RC2
9. macOS Sonoma RC1
8. macOS Sonoma Beta 7 =
7. macOS Sonoma Beta 6 =
6. macOS Sonoma Beta 5 =
5. macOS Sonoma Beta 4 =
4. macOS Sonoma Public Beta = No change
3. macOS Sonoma Beta 3 =
2. macOS Sonoma Beta 2 =
1. macOS Sonoma Beta 1 =

11. What’s new for Enterprise in macOS Sonoma

Enterprise changes in macOS Sonoma

none

https://support.apple.com/en-us/HT213893

12. Security Content of macOS Sonoma

Security vulnerabilities in this Sonoma Update

Fixes addressed in this update =

Safari 17.2.1 =

Sonoma 14.2.1 =

13. macOS Sonoma Release Notes