By Joe Udo
NEW YORK (CONVERSEER) – Appleinsider published a blog post on 17th September, reporting that Apple will push macOS 26 Tahoe globally starting on 15th September 2025. Most devices have been successfully upgraded, but Mac Studio M3 Ultra users have reported that they cannot complete the installation.
It was quoted a blog post introducing that this desktop Mac device is priced at 32,999 yuan in China. After downloading the update, the installation will be terminated at the final stage because the Apple Neural Engine driver fails the hardware verification check, and the system will automatically roll back to macOS Sequoia 15.7.
Community users reported that the issue centered on the Apple Neural Engine, a chip dedicated to accelerating AI and media tasks. The installation log showed that Tahoe failed when verifying the hardware registers related to the Neural Engine, causing the upgrade to terminate.
It is worth noting that both the M3 and M3 Max MacBook Pros and Intel platforms can be upgraded normally, which indicates that the issue is not a universal vulnerability.
The user tried various methods including running the installer in the terminal, downloading the complete image, entering safe mode, reinstalling in recovery mode, and even performing a fresh installation on an external SSD, but none of them worked.
Some reports suggest that MacBook Pros on the same network received build 25A354, while Mac Studios received the older build 25A353, potentially triggering the Neural Engine crash, though Apple has yet to publicly confirm this speculation.
Another theory suggests that Apple sometimes replaces patched builds without changing the version number. If this is true, Mac Studio users may have to wait for the patch to quietly appear on Apple’s servers.
Apple customer service in Europe has confirmed that engineers are analysing logs and developing a solution, but no timeline has been announced.
