Apple today seeded the sixth beta of an upcoming macOS High Sierra 10.13.3 update to developers, just a few days after seeding the fifth beta and more than a month after releasing macOS High Sierra 10.13.2, the second major update to the macOS High Sierra operating system.

The new macOS High Sierra 10.13.3 beta can be downloaded from the Apple Developer Center or through the Software Update mechanism in the Mac App Store with the proper profile installed.

macoshighsierra10133beta
It's not yet clear what improvements the macOS High Sierra 10.13.3 update will bring, but it's likely to include bug fixes and performance improvements for issues that weren't addressed in macOS High Sierra 10.13.2.

It does offer additional fixes for the Spectre and Meltdown vulnerabilities that were discovered and publicized in early January and fixed initially in macOS High Sierra 10.13.2.

The update also fixes a bug that allows the App Store menu in the System Preferences to be unlocked with any password.

The previous macOS High Sierra 10.13.2 update focused solely on security fixes and performance improvements, with no new features introduced, and a supplemental update introduced a fix for the Spectre vulnerability.

Update: Apple appears to have temporarily pulled the macOS High Sierra 10.13.3 update, and it is no longer available for download from the developer site.

Update 2: The macOS High Sierra 10.13.3 update is once again available to download.

Related Forum: macOS High Sierra

Top Rated Comments

Jaekae Avatar
62 months ago
The last update likely bricked my iMac 2011... grey screen of death for everything even Time Machine... I have possibly lost years of data despite backups (hardware check all clear no issues) and Apple will lose a customer.
Why install a beta on your main machine with years of data on it, sounds not so smart
Score: 10 Votes (Like | Disagree)
krakman Avatar
62 months ago
Not this bata, the last approved update that was issued bricked it. I don’t know how to fix it
[doublepost=1516450329][/doublepost]
I never installed bata??? It’s the last update that did this ... are you suggesting I ended up with a bata version because I am not enrolled in any program.
You are commenting in the thread for beta software release, hence everyone assumes you are running a beta version of the operating system on a production machine, which is why you are not getting any sympathy.

Have you tried any of the following:

SMC reset: https://support.apple.com/en-gb/HT201295

NVRAM reset: https://support.apple.com/en-gb/HT204063

try to start in Safe mode: https://support.apple.com/en-gb/HT201262

Disconnect all external devices such as hard drives, DVD drives, card readers, even USB keyboard and mouse and then try to start the machine. this test is to eliminate the possibility of a faulty device preventing the computer from booting.

Use another mac to install a fresh copy of Sierra onto an external USB hard drive. Connect this hard drive to your Mac press and hold OPTION key during boot to bring up the start up manager https://support.apple.com/en-gb/HT202796, then boot from the USB disk and use disk utility to try to repair your internal disk.
Score: 4 Votes (Like | Disagree)
krakman Avatar
62 months ago
The last update likely bricked my iMac 2011... grey screen of death for everything even Time Machine... I have possibly lost years of data despite backups (hardware check all clear no issues) and Apple will lose a customer.
It is beta software, it specifically says do not run it on a production machine. You agreed to the terms and conditions when enrolling in the beta program.

https://beta.apple.com/sp/betaprogram/faq

"Install the beta software only on non-production devices that are not business critical. We strongly recommend installing on a secondary system or device, or on a secondary partition on your Mac."
Score: 4 Votes (Like | Disagree)
squirrelist Avatar
62 months ago
Yes, six versions of the same BETA are beyond ridiculous. It's like they have no clue what they're doing as far as fixes, let alone thinking about improvements. :(
Six betas is pretty typical for Apple. And not just recently. If you Google "mac os x sixth beta" you'll see many news articles of beta sixes over the years. Even betas eight (10.6.7), and nine (10.9.3 which was in beta for two months compared to this beta lasting only about six weeks so far). I'm not saying your conclusion is wrong, but the number of betas has little to do with it.
Score: 2 Votes (Like | Disagree)
C DM Avatar
62 months ago
No, you obviously are too young to remember how the beta process was. :D
Simply further confirmation of the observation I made.
Score: 2 Votes (Like | Disagree)
chrfr Avatar
62 months ago
I reminisce about the days of my Mac Pro not being re-booted for 6 months.

Or when there were not 6 versions of the same beta.
If you don't want to reboot your computer every week, don't install the betas. Seems pretty simple to me.
As others have said, this number of betas is, and has been, common for OS X/macOS for many years, even back when Steve Jobs was still alive and in charge.
Score: 2 Votes (Like | Disagree)

Popular Stories

USB C Over Lightning Feature

EU Passes Law to Switch iPhone to USB-C by End of 2024

Tuesday October 4, 2022 3:30 am PDT by
The European Parliament today voted overwhelmingly in favor of enforcing USB-C as a common charging port across a wide range of consumer electronic devices, including the iPhone and AirPods, by the end of 2024. The proposal, known as a directive, forces all consumer electronics manufacturers who sell their products in Europe to ensure that a wide range of devices feature a USB-C port. This...
General iOS 16 Feature Yellow

10 New iOS 16 Features Coming Later This Year

Monday October 3, 2022 2:41 pm PDT by
iOS 16 was released to the public three weeks ago with a customizable Lock Screen, the ability to edit iMessages, improvements to Focus modes, and much more. And in the coming months, iPhone and iPad users have even more new features to look forward to. We've rounded up 10 new features coming to the iPhone and iPad later this year, according to Apple. Many of the features are part of iOS...
magsafe charger orange

Apple Releases New MagSafe Charger Firmware

Tuesday October 4, 2022 12:09 pm PDT by
Apple today released updated firmware for the MagSafe Charger that is designed to work with the iPhone 12 and later and the AirPods Pro 2. The new firmware is version 10M1821, up from the prior 10M229 firmware. Note that in the Settings app, you'll see a different version number than the firmware number, with the update displayed as version 255.0.0.0 (the prior firmware was 247.0.0.0). The...
maxresdefault

Video: AirPods Pro 2 vs. Bose QuietComfort II

Monday October 3, 2022 12:50 pm PDT by
Apple on September 23 officially launched the second-generation version of the AirPods Pro, introducing updated Active Noise Cancellation, Adaptive Transparency, improved sound, and more. Right around the same time, Bose introduced new QuietComfort II earbuds with many similar features, so we thought we'd compare the two to see which has the edge. Subscribe to the MacRumors YouTube channel for ...
iOS 16

Apple Preparing iOS 16.0.3 With More Bug Fixes Following iPhone 14 Launch

Monday October 3, 2022 7:53 am PDT by
iOS 16.0.2 was released last month with several bug fixes for iPhone 14 issues, excessive copy and paste permission prompts, and more. Now, evidence suggests that Apple is planning to release iOS 16.0.3 with additional bug fixes. Evidence of an upcoming iOS 16.0.3 software update has shown up in MacRumors analytics logs, which have been a reliable indicator in the past. There are several...
ipad pro m1 feature

Gurman: Apple Event This October Remains Unlikely, No Touch ID for iPhone 15

Sunday October 2, 2022 6:41 am PDT by
Apple is developing new iPad Pro, Mac, and Apple TV models, and at least some of these products will be released in October, according to Bloomberg's Mark Gurman. However, Gurman continues to believe that Apple is unlikely to hold an event this month. In the latest edition of his Power On newsletter, Gurman said "the big iPhone 14 unveiling last month was probably it for Apple in 2022 in...
General YouTube Feature 1

You May Soon Need to Be a YouTube Premium Subscriber to Watch 4K Videos

Monday October 3, 2022 4:29 am PDT by
YouTube may make watching videos in 4K quality on the platform exclusive to only YouTube Premium subscribers, according to screenshots posted by users on Twitter and Reddit. On Reddit (1,2) and Twitter, some users have started to recently notice that on iOS, and presumably across other platforms also, YouTube is now saying that in order to watch videos in 4K, the user must be a paying...
Apple SIM Card

Apple SIM No Longer Available for Activating New Cellular Data Plans on iPads

Sunday October 2, 2022 8:04 am PDT by
As of October 1, Apple SIM is no longer available for activating new cellular data plans on supported iPad models, according to an Apple support document. Introduced in 2014, the Apple SIM was designed to allow iPad users to activate cellular data plans from multiple carriers around the world. Initially, the Apple SIM was a physical nano-SIM card, but it was embedded inside later iPad Pro...