macOS Sequoia 15.1 Update Everything You Need to Know!

macOS Sequoia 15.1 is now Available!

UPDATED: 10/31/24

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

Apple just released the first major point release for macOS Sequoia! Let’s jump in and find out what’s new.

OpenCore Legacy Patcher for Unsupported Macs

OCLP 2.0.2 & macOS 15.1 : Working well across all test devices, only a few small issues on non-metal Macs

Kernel Debug Kit (KDK) Status: = 15.1 (24B83) is now available

MetallibSupportPkg Status: = MetallibSupportPkg-15.1-24B83.pkg

macOS 15 Patch Notes Summary

  • 1. New Features/Improvements – 20
  • 2. Operating Sytem Bug Fixes – 2
  • 3. Security Fixes – 47
  • 4. Enterprise Changes – 9
  • 5. Safari Security (Webkit) – 2
  • 6. Full installer & M1 IPSW -Apple has released both the InstallerAssistant.pkg and the Apple Silicon IPSW for Sequoia 15.1
My Sequoia 15.1 Update & OpenCore Legacy Patcher Video
My macOS Sequoia 15.1 Update video!

Full Apple Update Release list

  1. macOS Sequoia 15.1 (24B83)
  2. macOS Sonoma 14.7.1 (23H222)
  3. macOS Ventura 13.7.1 (22H221)
  4. iOS 18.1 (22B83)
  5. iPadOS 18.1 (22B83)
  6. iOS 17.7.1 (21H216)
  7. iPadOS 17.7.1 (21H216)
  8. watchOS 11.1 (22R585)
  9. tvOS 18.1 (22J580)
  10. audioOS 18.1 (22J580)
  11. visionOS 2.1 (22N581)

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Table of Contents

  • 1. macOS Sequoia Apple Links
  • 2. macOS Sequoia Final Release History
  • 3. macOS Sequoia Full Installer.app
  • 4. Apple Silicon macOS Sequoia IPSW Restore file Database
  • 5. macOS Sequoia 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 Sequoia
  • 12. Security Content of macOS Sequoia
  • 13. macOS Sequoia Release Notes / Patch Notes / Changes

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

1. Apple macOS Links

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

  1. What’s new in the updates for macOS Sequoia – https://support.apple.com/en-us/120283
  2. What’s new for enterprise in macOS Sequoia – https://support.apple.com/en-us/121011
  3. Apple Security Updates Page – https://support.apple.com/en-us/HT201222
  4. macOS Sequoia features page – https://www.apple.com/macos/macos-sequoia/
  5. Platform Security Guide – macOS Rapid Security Response system.
  6. Platform Guide Deployment – What’s new in Apple platform deployment
  7. AppleSeed Notes Link = appleseed.apple.com/
  8. Apple Developer Public Link = developer.apple.com/documentation/macos-release-notes
  9. macOS Deployment References Changes – https://support.apple.com/guide/deployment-reference-macos/document-revision-history-apd04dff7069/web

2. macOS Sequoia 15 Final Release History

  • 3. macOS Sequoia 15.1 (24B83) – 10/28/24
  • 2. macOS Sequoia 15.0.1 (24A348) – 10/04/24
  • 1. macOS Sequoia 15.0 (24A335) – 9/16/24

3. macOS Sequoia 15 Full Installer.app

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

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

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

4. Apple Silicon macOS Sequoia IPSW Restore file Database

Apple has released the full IPSW restore file of macOS for Apple Silicon M1,M2 & M3 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/

5. macOS Sequoia Update sizes

Sequoia Delta Update

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

Full update & OCLP Users = 14.53GB

Apple Silicon Updates

Delta from macOS 15.0.1 with size = 2.93GB

Intel Updates

Delta from macOS 15.0.1 with size = 1.83GB

6. 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 = Updated!

  • 3. macOS Sequoia 15.1 = 11881.41.5
  • 2. macOS Sequoia 15.0.1 = 11881.1.1
  • 1. macOS Sequoia 15.0 = 11881.1.1

7. 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 = Updated!

  • 3. macOS Sequoia 15.1 = 11881.41.5
  • 2. macOS Sequoia 15.0.1 = 11881.1.1
  • 1. macOS Sequoia 15.0 = 11881.1.1

8. Intel T2 BridgeOS Update

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

BridgeOS version = Updated!

  • 3. macOS Sequoia 15.1 = 22.16.11072.0.0
  • 2. macOS Sequoia 15.0.1 = 22.16.11053.5.1,0
  • 1. macOS Sequoia 15.0 = 22.16.11053.5.1,0

9. Intel T2 Firmware Update

The version of firmware for your Mac (2018-2020 Intel Macs) was updated.

Firmware version = NOT updated.

  • 3. macOS Sequoia 15.1 = 2069.40.2.0.0
  • 2. macOS Sequoia 15.0.1 = 2069.40.2.0.0
  • 1. macOS Sequoia 15.0 = 2069.40.2.0.0

10. Safari Update

The new version of Safari 18 is included in the macOS 15 update.

Safari = Updated!

  • 3. macOS Sequoia 15.1 = Version 18.1 (20619.2.8.11.10)
  • 2. macOS Sequoia 15.0.1 = Version 18.0.1 (20619.1.26.31.7)
  • 1. macOS Sequoia 15.0 = Version 18.0 (20619.1.26.31.6)

11. What’s new for Enterprise in macOS 15

Enterprise changes in macOS Sequoia

  • Mobile Device Management can manage Writing Tools and Mail summarization.
  • MDM can prevent prompts triggered by apps using deprecated content capture technologies.
  • MDM can prevent users from enabling Media Sharing in System Settings.
  • Login and unlock complete without delay when a passcode policy is configured by MDM.
  • Upgrading to macOS 15 Sequoia completes successfully when a local user account is present without a valid home directory.
  • Improves network stability when using content filter extensions.
  • Improves APNs compatibility with legacy VPN products.

https://support.apple.com/en-us/121011

12. Security Content of macOS 15.1

Security vulnerabilities in this Update

Fixes addressed in this update = 48

Safari Webkit = 2

https://support.apple.com/en-us/100100

13. macOS 15.1 Release Notes

macOS Sequoia updates improve the stability, performance, or compatibility of your Mac and are recommended for all macOS Sequoia users.

Apple Intelligence (Mac with M1 and later)

Writing Tools

  • Writing Tools are available nearly everywhere you type, allowing you to rewrite, proofread, and summarize text right in the app you’re working in
  • Rewrite suggests different versions of your text so you can choose which combination of flow and wording you like best
  • Proofread lets you view suggested improvements to what you’re writing, like grammar fixes and language refinements
  • Summarize allows you to select text wherever you’re writing and generate a high-quality summary

Siri

  • A new look and feel includes a glowing light that wraps around the edge of your screen, animates responsively to the sound of your voice, and lets you keep scrolling or typing while you talk to Siri
  • Type to Siri when you don’t want to speak a request out loud
  • Richer language understanding enables Siri to follow along if you stumble over your words or change your mind mid-sentence
  • Conversational context is maintained over the course of a session, so you can refer more naturally to something you said in a recent request or something Siri mentioned in a recent response
  • Product knowledge helps you get answers to thousands of questions about the features and settings on your Apple products
  • Voice enhancements make Siri sound more natural, expressive, and clear

Photos

  • Memory movies can be created by describing the story you want to see
  • Photos search lets you find photos and videos simply by describing what you’re looking for
  • Clean Up removes distractions in your photos

Notifications

  • Notification summaries make it easy to catch up on your notifications with a glanceable summary of the most important information
  • Reduce Interruptions is a new Focus that ensures the most urgent notifications get through to you while silencing potential distractions

Additional Features

  • Smart Reply in Mail and Messages help you quickly respond to messages with suggested responses
  • Transcription summaries in Notes give you an intelligently created summary of the transcript from your audio recording

iPhone Mirroring

  • Drag and drop support lets you seamlessly move files, photos, videos, and more between your Mac and iPhone

AirPods

  • Hearing Protection feature helps users minimize exposure to loud environmental noise across listening modes (available in the United States and Canada)
  • Features require AirPods Pro 2 with firmware version 7B19 or later. All features may not be available for all countries or regions, for more information visit: https://apple.com/airpods-pro/feature-availability/

This update also includes the following improvements and bug fixes:

  • Option to automatically download and install games and apps to an external disk drive
  • Game Center friend invites can be sent directly from the Contacts app and Friend Suggestions and receivers can see the invites in the inbox in Settings

https://support.apple.com/en-us/120283

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