Identical code using system_profiler to look up the firmware version number worked in two apps but failed in a third. The solution was obscure.
bug
At the end of October, some of you who follow this blog by email started reporting to me […]
Mainly a test of image alignment and scaling to work around a problem appearing in follower email versions of this blog.
Why you should reconsider whether you let your Mac automatically download and install ‘silent’ updates, and what you can do instead.
Apple seldom posts Support Notes to guide many users to solve problems, but prefers them to access Apple Support one at a time. Why this inefficiency?
Why many had problems, what they are exactly, what you can do about them, and how they should be prevented.
CTS scheduling and dispatch of background tasks has no user interface, and no controls. How can you tell that there’s a problem, and what to do about it?
One was just a bit wonky, the other has made a mess of many who installed the update. So what went wrong?
Disk Utility can’t image APFS volumes, and normally returns an error if you try to image a container. Here’s the workaround.
The more you look at changes to Mach Absolute Time coming in Apple Silicon Macs, the more messy they become, largely because the docs are so incomplete.
The Eclectic Light Company 