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macOS Tahoe 26.3 Update! Everything you need to know.

macOS Tahoe 26.3 (25D125) is now Available For All Users!

UPDATED: 02/12/26

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

Apple just released the 3rd major update for macOS Tahoe to the public! Let’s jump in and find out what’s new.

macOS Tahoe Patch Notes Summary

1. Public Documented New Features – None listed by Apple
2. Public Documented Bug Fixes – “Bug Fixes” listed who knows
3. Developer Documented Fixes – 1
3. Security Fixes – 55 CVE’s addressed
4. Enterprise Fixes – 3
5. Safari Security (Webkit) –
7. Safari – 26.3 (21623.2.7.11.6)
6. Full installer & IPSW – Both full installer and IPSW released for 26.3
7. OpenCore Legacy Patcher Users – NOT COMPATIBLE!

OpenCore Legacy Patcher for Unsupported Macs

OCLP 2.4.1 & macOS Tahoe 26.3 : DO NOT INSTALL! NOT COMPATIBLE YET. This release is in full testing and it is not recommended that you attempt to install it yet.!

OCLP 2.4.1 Testing Status = in progress

Kernel Debug Kit (KDK) Status: = https://github.com/dortania/KdkSupportPkg/releases

Metallibsupport Status: = https://github.com/dortania/MetallibSupportPkg/releases

Full Apple Update Release list

Update List 💻📲 ✅

Tahoe 26.3 (25D125)
Sequoia 15.7.4 (24G517)
Sonoma 14.8.4 (23J319)
iOS & iPadOS 26.3 (23D127)
iOS & iPadOS 18.7.5 (22H311)
homePodOS 26.3 (23K620)
tvOS 26.3 (23K620)
watchOS 26.3 (23S620)
visionOS 26.3 (23N620)
Safari – 26.3
Xcode – Xcode 26.2 still old version
Command Line Tools for Xcode – Xcode 26.2 Command Line Tools

NOTE: I hate website ads, but this one small google ad below helps me with the cost of running Mr. Macintosh.com. Thank you

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

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

macOS Catalina 10.15.8 (2026‑001) Released Six Years After Its Original Launch!

10.15.8 2026-001 Update (19H2036) Released! (note my old school update thumbnail style)

macOS Catalina 10.15.8 2026-001 Update is now Available.

Today, Apple released an update for macOS Catalina. This operating system came out more than six years ago, and many of us assumed it would never receive another update again. Surprise! We now have macOS Catalina 10.15.8 (2026‑001).

This is the link for what’s new in macOS Catalina Updates. The page entry is even marked “This article has been archived and is no longer updated by Apple”

“This update extends the certification required by features such as iMessage, FaceTime, and device activation to continue working after January 2027.”

https://support.apple.com/en-us/101184

The security page does list 10.15.8 and says the following:

“Security Update 2026-001 Catalina This update has no published CVE entries.”

https://support.apple.com/en-us/HT211947

Apple’s Public Patch Notes / Release Notes Documentation

Apple Documentation takes a little while to show up online after release. I will update when the new articles are made available.

https://support.apple.com/en-us/HT210642

developer.apple.com/documentation/macos_release_notes

developer.apple.com/documentation/macos-release-notes/macos-catalina-10_15_6-release-notes

For more detailed information about this update and previous updates, please visit: https://support.apple.com/kb/HT210642

Full List of macOS Catalina 10.15 Releases

38. 10.15.8 (19H2300) – February 2, 2026
37. 10.15.7 (19H2036) – July 20, 2022
36. 10.15.7 (19H1922) – May 16, 2022
35. 10.15.7 (19H1824) – March 14, 2022
34. 10.15.7 (19H1715) – February 14, 2022
33. 10.15.7 (19H1713) – January 26, 2022
32. 10.15.7 (19H1615) – December 13, 2021
31. 10.15.7 (19H1519) – October 25, 2021
30. 10.15.7 (19H1419) – September 23, 2021
29. 10.15.7 (19H1417) – September 13, 2021
28. 10.15.7 (19H1323) – July 21, 2021
27. 10.15.7 (19H1217) – May 24, 2021
26. 10.15.7 (19H1030) – April 26, 2021
25. 10.15.7 (19H524) – February 9, 2021
24. 10.15.7 (19H512) – February 1, 2021
23. 10.15.7 (19H114) – December 14, 2020
22. 10.15.7 (19H15) – November 5, 2020
21. 10.15.7 (19H2) – September 24, 2020
20. 10.15.6 (19G2021) – August 12, 2020
19. 10.15.6 (19G2006) – August 4, 2020
18. 10.15.6 (19G2005) – August 4, 2020
17. 10.15.6 (19G73) – July 15, 2020
16. 10.15.5 (19F2200) – June 15, 2020
15. 10.15.5 (19F2096) – June 15, 2020
14. 10.15.5 (19F101) – June 1, 2020
13. 10.15.5 (19F96) – May 26, 2020
12. 10.15.4 (19E2269) – May 6, 2020
11. 10.15.4 (19E287) – April 8, 2020
10. 10.15.4 (19E266) – March 24, 2020
9. 10.15.3 (19D2064) – March 23, 2020
8. 10.15.3 (19D76) – January 28, 2020
7. 10.15.2 (19C57) – December 10, 2019
6. 10.15.1 (19B2106) – November 13, 2019
5. 10.15.1 (19B2093) – November 13, 2019
4. 10.15.1 (19B88) – October 29, 2019
3. 10.15.0 (19A603) – October 21, 2019
2. 10.15.0 (19A602) – October 15, 2019
1. 10.15.0 (19A583) – October 7, 2019

Old List

22. 10.15.7 = (19H15) – Supplemental Update – Nov 5th 2020
21. 10.15.7 = (19H2) – Update – Sep 24th 2020
20. 10.15.6 = (19G2021) – Supplemental Update – Aug 12th 2020
19. 10.15.6 = (19G2006) – 2020 iMac Fork Re-Released – Aug 4th, 2020
18. 10.15.6 = (19G2005) – 2020 iMac Fork – Aug 4th, 2020
17. 10.15.6 = (19G73) – July 15th, 2020
16. 10.15.5 = (19F2200) – 16″ MBPro Update Fork – June 15th 2020
15. 10.15.5 = (19F2096) – 16″ MBPro Shipping Fork – June 15th 2020
14. 10.15.5 = (19F101) – Supplemental Update – June 1st, 2020
13. 10.15.5 = (19F96) – May 26, 2020
12. 10.15.4 = (19E2269) – 13″MBPro Shipping Fork – May 6th 2020
11. 10.15.4 = (19E287) – Supplemental Update – April 8th, 2020
10. 10.15.4 = (19E266) – March 24th 2020
9. 10.15.3 = (19D2064) – MBAir Shipping Fork March 23rd 2020
8. 10.15.3 = (19D76) – January 28th 2020
7. 10.15.2 = (19C57) – December 10th 2019
6. 10.15.1 = (19B2106) – 16″ MBPro Update Fork – November 13th 2019
5. 10.15.1 = (19B2093) – 16″ MBPro Shipping Fork – Nov 13th 2019
4. 10.15.1 = (19B88) – October 29th 2019
3. 10.15.0 = (19A603) – Supplemental Update Re-Released – Oct 21st 2019
2. 10.15.0 = (19A602) – Supplemental Update – October 15th 2019
1. 10.15.0 = (19A583) – October 7th 2019

macOS Catalina 10.15.8 2026-001 Update Changes, Info & Download Links

T2 BridgeOS Update

T2 BridgeOS NOT updated for 10.15.8. It will only update if you did not install the previous 2022-005 Security Update

Size = 417.7 MB

Product ID = 001-51038

BridgeOS Update Version = 17.16.16610.0.0

3. Previous 10.15.7 Update = 17.16.16610 = BuildVersion 6
2. Previous 10.15.6 Supplemental Update = 17.16.16610
1. Previous BridgeOS Update Version = 17.16.16065

Security Content of macOS Catalina 10.15.8 Update.

This document lists security updates for Apple software.

support.apple.com/en-us/HT201222

MacOS Catalina 10.15.8 2026-001

The following security fixes are included in Catalina 10.15.8.

Released Feb 2, 2026

“Security Update 2026-001 Catalina This update has no published CVE entries.”

macOS Big Sur 11.7.11 Update Released Years After Retirement

macOS Big Sur 11.7.11 Update is now available!

Well this is a new one… Apple just released macOS Big Sur 11.7.11 (20G1443) Update!

Apple ended support for macOS Big Sur in September 2023. With this release, Big Sur now ties OS X Tiger (10.4.11) for the most point‑release updates in macOS history. Who would have thought we’d see another update for Big Sur? We did get a hint last week when Apple pushed out several older iOS updates, but I still didn’t expect any new macOS releases. I’m glad I was wrong.

This will allow important services like device activation, FaceTime, iMessage and other services to continue to work after the current certificates expires in January 2027.

I applaud Apple for doing this. We need to recognize that for many people, older computers are their only means of communication. Not everyone has the resources to buy a new device. This update will help those users continue using their Macs and iPhones. It’s especially important to remember how impactful this is in impoverished areas around the world.

Even though Apple updated Big Sur to address these certificate issues, it’s important to remember that the OS is no longer security‑supported. No security updates have been released for it in over two years. If possible, please use OCLP or upgrade to at least the last supported version, macOS Sonoma.

Big Sur Update Quick Overview

macOS Big Sur 11.7.11 Update – This update extends the certification required by features such as iMessage, FaceTime, and device activation to continue working after January 2027.
Big Sur 11.7.11 Full installer is available!
Apple stopped releasing M1 IPSW restore files after version 11.6.
Safari update = 16.6.1 is the latest version available

macOS Big Sur Update Summary

New Features – None
Resolved Issues – Multiple certificates were updated
Security Fixes – None

Month: February 2026