As promised last week, Apple has released the upgrade to macOS 15.0 Sequoia, together with security updates to bring Sonoma to version 14.7, and Ventura to 13.7. There should also be Safari updates to accompany the latter two.

The Sequoia update is around 6.6 GB for Apple silicon Macs, and 14.7 is around 1.6 GB. For Intel Macs, 15.0 is around 4.9 GB as an ‘update’, and 14.7 is around 860 MB.

Security release notes for Sequoia list around 77 vulnerabilities addressed, including two in the kernel, none of which Apple is aware may have been exploited in the wild. Release notes list 36 vulnerabilities addressed in Sonoma 14.7 here, and there are 30 listed for Ventura 13.7 here.

iBoot firmware is updated to version 11881.1.1, Intel T2 firmware to version 2069.0.0.0.0 (iBridge 22.16.10353.0.0,0), and Safari to 18.0 (20619.1.26.31.6).

After completing the upgrade to 15.0, you are likely to see that the installed XProtect version is 0, in other words that there is no XProtect data. You can leave your Mac to automatically download the required data from iCloud, or manually force it using the command
sudo xprotect update
then entering your admin password. That will normally ‘activate’ the XProtect data previously installed, and set the version to 5272, although that will then need to be updated to 5273 separately. Don’t be surprised if you end up repeating the trip to Terminal to get this to work.

If you use .NET, you may wish to delay upgrading to Sequoia: see this article for further details. Thanks to Raoul for pointing this out.

Last updated 0810 GMT 17 September 2024.