MacOS Sequoia 15.7.4 & MacOS Sonoma 14.8.4 Security Updates Released

Apple has released MacOS Sequoia 15.7.4 and MacOS Sonoma 14.8.4 as system software updates for the Sonoma and Sequoia operating systems, focusing on security patches for Mac users who are not running macOS Tahoe.
Separately, macOS Tahoe 26.3, iOS 26.4, ipadOS 26.3, watchOS 26.3, tvOS 26.3, along with iOS 18 updates, are also available for eligible devices.
How to Download & Install MacOS Sequoia 15.7.4 & MacOS Sonoma 14.8.4 Update
Don’t forget to backup your Mac with Time Machine before proceeding with a software update.
- From the Apple menu , select “System Settings”
- Go to “General” and then “Software Update”
- Look carefully for MacOS Sequoia 15.7.4 or macOS Sonoma 14.8.4, below the giant aggressive Tahoe banner, and update those specifically, so you do not accidentally install macOS Tahoe

You must restart the Mac to finish installation.
MacOS Sequoia 15.7.4 & MacOS Sonoma 14.8.4 Installer Download Links
You can download direct package installers for the latest Sonoma and Sequoia updates from Apple CDN:
MacOS Sequoia 15.7.4 & macOS Sonoma 14.8.4 Release Notes
Release notes are brief, mentioning only security fixes:
This update provides important security fixes and is recommended for all users.
After you update your Macs, don’t forget to update all of your other Apple devices as well. The entire OS 26 suite has received software updates, along with updates for iPhone and iPad users still running iOS 18.













