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– Fixes graphics corruption issues affecting certain apps on iMac Pro. – Adds support for external graphics processors (eGPUs).

– Adds support for Business Chat conversations in Messages in the U.S. The macOS High Sierra 10.13.4 Update improves the stability, performance, and security of your Mac, and is recommended for all users. This update is recommended for all macOS High Sierra users. Release notes for the latest High Sierra build are as follows:

Package installers for the macOS 10.13.4 Combo Update, Standard Update, and Security Updates for Mac OS Sierra and El Capitan can be downloaded directly from the Apple Support downloads site here as well. Installing Security Updates also usually requires a system reboot.Īn updated version of iTunes 12.7.4 and Safari 11.1 are also available for Mac users as well, though whether or not you find those available will depend on what version of system software and iTunes is in use on the given Mac.

Installing any Mac OS system software update requires the computer to reboot. Choose the “Updates” tab and find the “MacOS High Sierra 10.13.4” download available to install (or Security Update 2018-002 if the Mac is running Sierra or El Capitan).Go to the  Apple menu and choose “App Store”.Download & Install MacOS High Sierra 10.13.4Īlways back up a Mac with Time Machine or your backup method of choice before beginning any software update. MacOS 10.13.4 also includes support for external GPU hardware.įull release notes for macOS High Sierra 10.13.4 are included further below. You can see what apps are 32-bit on your Mac with these instructions, otherwise when you open a 32-bit app on a Mac running 10.13.4 or later you will see a notification alerting you to update the app. The macOS High Sierra 10.13.4 release does start notifying users when running 32-bit apps however, as Apple moves to eventually discontinue support for running older 32-bit applications in Mac OS. A new version of Safari 11.1 is also available for the earlier MacOS releases.Īside form the inclusion of a new cloud wallpaper, there are not many outward changes to macOS 10.13.4, suggesting the latest High Sierra update is mostly aimed for bug fixes and enhancements. The Security Update 2018-002 packages for El Capitan and Sierra are exclusively for security patches and are also recommended to install for any Mac user running those versions of system software. The macOS High Sierra 10.13.4 release includes various bug fixes and enhancements to MacOS High Sierra and is therefore recommended to install on any Mac currently running the High Sierra system software.

Additionally, iOS 11.3 update for iPhone and iPad is available to download along with updates to watchOS, tvOS, and HomePod.