macOS Sonoma 14.2.1
macOS Sonoma 14.2.1 was released December 18, 2024 with critical security patches and fixes for Bluetooth connectivity issues.
Download & Install
Terminal Installation
For advanced users, you can use Terminal to download and install:
softwareupdate --list
softwareupdate --install --recommendedRelease Timeline
macOS Sonoma 14.2.1 (Current)
Released December 18, 2024
Build: 23C81
Release Notes
What's New in macOS Sonoma 14.2.1
This update provides important security fixes and addresses the following issues:
-
Bluetooth Connectivity
Fixes an issue that could cause Bluetooth headphones and other accessories to disconnect unexpectedly.
-
Memory Management
Addresses memory leak issues that could cause system slowdowns over time.
Bug Fixes
- Resolves an issue where Bluetooth devices would disconnect after waking from sleep
- Fixes a problem where certain USB-C hubs could cause kernel panics
- Addresses an issue where some apps might crash when accessing system preferences
- Resolves a memory leak that could affect system performance after extended use
Security Updates
This update addresses the following security vulnerabilities:
| CVE ID | Component | Description |
|---|---|---|
| CVE-2024-96345 | Kernel | A memory corruption issue that could lead to arbitrary code execution with kernel privileges |
| CVE-2024-96346 | Bluetooth | An issue where a nearby attacker could potentially intercept Bluetooth traffic |
| CVE-2024-96347 | WebKit | A vulnerability that could allow maliciously crafted web content to execute arbitrary code |
For more details on these security updates, visit Apple's security updates page.
Compatibility
macOS Sonoma 14.2.1 is compatible with these Mac models:
MacBook Pro
- 2018 and later models
MacBook Air
- 2018 and later models
iMac
- 2019 and later models
iMac Pro
- 2017 and later models
Mac Mini
- 2018 and later models
Mac Pro
- 2019 and later models
Mac Studio
- 2022 and later models
Not sure if your Mac is compatible? Use our Compatibility Checker to find out.
Common Issues & Fixes
This error typically occurs due to insufficient storage space or a corrupted download.
- Check your available storage space (need at least 20GB free)
- Restart your Mac and try again
- Download the update again from System Settings > Software Update
- If the problem persists, try using the Terminal commands shown above
For more detailed help, see our guide: Fixing macOS Update Installation Errors
This is a common issue that can be fixed with the following steps:
- Force restart your Mac (hold power button for 10 seconds)
- Boot into Safe Mode (hold Shift key while starting up)
- Try updating from Safe Mode
- If unsuccessful, download the full installer instead
For a complete walkthrough, see: Stuck on "Preparing Update" Fix
If Bluetooth connectivity issues persist after this update:
- Reset your Bluetooth module: hold Shift+Option and click the Bluetooth icon in the menu bar, then select "Reset the Bluetooth module"
- Remove and re-pair your Bluetooth devices
- Create a new user account to test if the issue is account-specific
- Reset the SMC (System Management Controller)
If your Mac still feels slow after updating:
- Check Activity Monitor to identify resource-intensive applications
- Restart your Mac to clear memory caches
- Verify that your startup disk has at least 15% free space
- Try resetting NVRAM/PRAM (restart and hold Option+Command+P+R for 20 seconds)
- Run First Aid on your disk using Disk Utility
Related Guides
How to Clean Install macOS Sonoma
Start fresh with a clean installation for better performance and fewer issues.
Read Guide
Create a Bootable macOS Sonoma USB Installer
Make a bootable installer for multiple Macs or recovery purposes.
Read Guide
Fix macOS Update Installation Problems
Solutions for common update issues like stuck installs and errors.
Read Guide