If you have a Mac Studio with an M3 Ultra chip and can't get macOS Tahoe to install, you're not alone. There is a bug that is preventing the update from installing properly on machines that have the M3 Ultra.


Affected users go to install macOS Tahoe, wait through the installation process and see the ‌Mac Studio‌ reboot, and then end up with macOS Sequoia 15.7 still running instead of macOS Tahoe. The macOS Tahoe update fails again and again.

A discussion thread on the Apple Support Communities suggests that the bug is impacting all Mac Studios with an M3 Ultra chip, and we have a ‌Mac Studio‌ that is unable to be upgraded. A Mac user who dug into the error messages suggests that the installer loads the macOS Tahoe driver for the Apple Neural Engine, but then a hardware check fails, and the installation process is aborted.

‌Mac Studio‌ owners say that attempting to install via standard software update, safe mode, and recovery mode have all failed. There is no known fix right now, and M3 Ultra ‌Mac Studio‌ users will need to wait for Apple to release a fix to solve the issue.

Apple is aware of the problem, so hopefully the problem will be resolved shortly.
This article, "Bug Prevents M3 Ultra Mac Studios From Installing macOS Tahoe" first appeared on MacRumors.com

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If your Mac experiences an issue that prevents it from starting up properly, macOS Tahoe includes a new Recovery Assistant that can attempt to identify the issue and resolve it, according to an Apple support document published this week.


If your Mac experiences certain behaviors during startup, Apple says the computer might automatically restart and open Recovery Assistant. To use the utility, click on the "Continue" button in the window and follow the on-screen steps.

When the recovery process is complete, Recovery Assistant will indicate that it recovered your Mac successfully, or that it was unable to recover your Mac, or that no known issues were found. Click on "Restart Mac" to complete the process.

If your Mac starts up successfully, Apple says you might be notified to recover your iCloud data.

If your Mac does not start up successfully, it has an issue that Recovery Assistant cannot resolve, and you can then move on to other troubleshooting steps.

Recovery Assistant is also available from the Utilities menu in macOS Recovery mode.

As we reported on earlier this year, iOS 26 and iPadOS 26 add a similar Recovery Assistant tool to the iPhone and iPad, and Apple published a support document this week with more details about how the feature works on those devices.
This article, "macOS Tahoe Features a New Recovery Assistant" first appeared on MacRumors.com

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