Apple Releases macOS High Sierra 10.13.6 Supplemental Update for 2018 MacBook Pro Models

As we await the launch of macOS Mojave this fall, Apple has quietly released an updated version of macOS High Sierra 10.13.6 that's designed for the 2018 MacBook Pro models.

The new version of the software can be downloaded directly from the Mac App Store or through the Software Update function in the Mac App Store on all compatible Macs that are already running macOS High Sierra.

macOS High Sierra
According to Apple's release notes the update will improve the stability and reliability of the MacBook Pro with Touch Bar, and is recommended for all 2018 machines.

The macOS High Sierra 10.13.6 Supplemental Update 2 improves the stability and reliability of MacBook Pro with Touch Bar (2018) computers, and is recommended for all users.

For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222

It's not entirely clear what specific bugs or security issues are addressed in the new software, but it features build numbers of 17G2307/15P6805, while prior build numbers were 17G2208/15P6703.

Some 2018 MacBook Pro owners have experienced crackling speakers and issues with kernel panics perhaps related to the T2 chip included in the machines, so it's possible the update addresses some of these issues.

Apple in July released an initial supplemental update for the 2018 MacBook Pro models to address a problem that caused the machines to excessively throttle when doing system intensive tasks. Today's update could also potentially include further refinements to processor performance.

macOS High Sierra is reaching the end of its life as Apple prepares to release macOS Mojave, the newest version of macOS that's currently being beta tested by developers and public beta testers. This is likely to be one of the final updates to the High Sierra operating system.

macOS Mojave introduces multiple enticing new features, such as a system-wide dark mode, dynamic wallpapers that shift throughout the day, Desktop Stacks for organizing desktop files, Finder improvements like a more useful Quick Look view and support for Quick Actions, and new apps like Apple News, Stocks, Home, and Voice Memos.

For details on what's coming in macOS Mojave, make sure to check out our macOS Mojave roundup.

Related Forum: macOS High Sierra

Top Rated Comments

maflynn Avatar
60 months ago
Why not?
Because the iMac Pro has been dealing with the T2 crashes longer and needs to be addressed as well.
Score: 7 Votes (Like | Disagree)
Weaselboy Avatar
60 months ago
I'm a somewhat gambling man, so I installed the update. No firmware update, so whatever they did is pure software.
There is a firmware update in this. I went from 15.16.6703.0.0,0 to 15.16.6805.0.0,0.
Score: 6 Votes (Like | Disagree)
nattK Avatar
60 months ago
I'm pretty sure it's for the bridge os error/kernel panics on the 2018 MBP with touch bar. I had been experiencing a lot of them and have been working with a senior advisor and apple engineers for quite a while. I was told last week that a software fix was coming soon to address the issue. I thought they were referring to Mojave but I guess this is it
Score: 5 Votes (Like | Disagree)
ghostface147 Avatar
60 months ago
I guess I am lucky with my 2018 MacBook Pro. No issues, no kernel panics, nothing. I feel left out. Now I jinxed myself.
Score: 5 Votes (Like | Disagree)
deadspider187 Avatar
60 months ago
Cinebench went from ~938 to ~990 CPU and ~89FPS to ~92FPS OPENGL. I think this may have included further performance improvements. I'm curious if others see the same.

Edit: 2.2GHz 555x model
Score: 5 Votes (Like | Disagree)
Winni Avatar
60 months ago
Just die already. Mojave can't get here fast enough! HS has been a support nightmare for me.
And you honestly believe that a "new" macOS version will fix all the things that the point releases for the current OS version have not fixed...?

The major problem with macOS and also Windows these days is that both platforms are in perpetual beta - and QA and bug fixing are no longer on the agenda.
Score: 4 Votes (Like | Disagree)

Popular Stories

iOS 17 on Phone Feature

Gurman: iOS 17 to Provide Several 'Most Requested Features'

Sunday March 26, 2023 6:05 am PDT by
Apple changed the strategy for iOS 17 later in its development process to add several new features, suggesting that the update may be more significant than previously thought, Bloomberg's Mark Gurman reports. In January, Gurman said that iOS 17 could be a less significant update than iPhone updates in previous years due to the company's intense focus on its long-awaited mixed-reality...
iOS 16

iOS 16.4 Will Add These 8 New Features to Your iPhone

Sunday March 26, 2023 8:06 am PDT by
Following nearly six weeks of beta testing, iOS 16.4 is expected to be released to the public as soon as this week. The software update includes a handful of new features and changes for the iPhone 8 and newer. To install an iOS update, open the Settings app on the iPhone, tap General → Software Update, and follow the on-screen instructions. Below, we have recapped eight new features and...
apple mixed reality headset concept by david lewis and marcus kane

Some Apple Employees Seriously Concerned About Mixed-Reality Headset as Announcement Draws Closer

Sunday March 26, 2023 8:25 am PDT by
Some Apple employees are concerned about the usefulness and price point of the company's upcoming mixed-reality headset, The New York Times reports. Apple headset concept by David Lewis and Marcus Kane Initial enthusiasm around the device at the company has apparently become skepticism, according to eight current and former Apple employees speaking to The New York Times. The change of tone...
iOS 16

Apple Releases iOS 16.4 With New Emoji, Safari Web Push Notifications, Beta Changes, Voice Isolation for Calls and More

Monday March 27, 2023 10:03 am PDT by
Apple today released iOS 16.4, the fourth major update to the iOS 16 operating system that initially came out last September. iOS 16.4 comes two months after the launch of iOS 16.3, an update that added Security Keys for Apple ID. iOS 16‌.4 and iPadOS 16.4 can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. It can take a few minutes...
Steve Jobs Theater dusk

Apple Reportedly Demoed Mixed-Reality Headset to Executives in the Steve Jobs Theater Last Week

Sunday March 26, 2023 5:53 am PDT by
Apple showcased its mixed-reality headset to the company's top 100 executives in the Steve Jobs Theater last week, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman explained that the "momentous gathering" is a "key milestone" ahead of the headset's public announcement planned for June. The event was intended to rally Apple's top members of...
top stories 25mar2023

Top Stories: iPhone 15 Pro Design Leak, iOS 16.4 Coming Soon, and More

Saturday March 25, 2023 6:00 am PDT by
We're still almost six months away from the official unveiling of the iPhone 15 lineup, but it seems like every day we're learning more about what to expect from the next-generation models. Notably, this week gave us our clearest look yet at what appear to be some changes for the volume and mute control hardware. iOS 16.4 and associated releases are also right around the corner with some new ...
apple tv 4k red image

Apple Releases tvOS 16.4 for Apple TV 4K and Apple TV HD

Monday March 27, 2023 10:00 am PDT by
Apple today released tvOS 16.4, the fourth major point update to the tvOS 16 operating system that came out last September. Available for the Apple TV 4K and Apple TV HD, tvOS 16.4 comes two months following the release of tvOS 16.3. The tvOS 16.4 update can be downloaded over the air through the Settings app on the ‌‌‌‌Apple TV‌‌‌‌ by going to System > Software Update....