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I also find this update to be highly unusual. I Googled it and found very little, only other users who report seeing this update. I haven't found anything official from Apple even mentioning this update's existence, so I am very skeptical of this update.

Until I see something from Apple's website, I think I'll pass on this update
 
It’s an update meant to fix problems for older iOS devices and to ensure compatibility with newer iOS devices. It will not show up on Apple’s website, none of these updates are. These files are updated in the process

CoreTypes.jpg

MobileDeviceSU2.jpg
 
After seeing bogdanw's second post, I decided to try it out. I did my usual Time Machine backup and then did the update, and things are ok so far. The update didn't change my Mojave version number, as it still says:

macOS 10.14.6 (18G4032)
 
"This update resolves an issue with launching certain 32-bit apps." does not mention iOS apps. Odd…
 
Some frameworks were 64bit only and broke some 32bit apps. This update restore the 32bit part of those frameworks.
 
It’s an update meant to fix problems for older iOS devices and to ensure compatibility with newer iOS devices. It will not show up on Apple’s website, none of these updates are. These files are updated in the process

View attachment 917939
View attachment 917940

You can get them and install manually from



and


 
This update fixed two big issues I had after the recent iTunes "helper" update that allows my iMac running Sierra to detect my iPhone which now runs iOS 14:

  • Felt Tip Software's Sound Studio, a legacy 32-bit app I got from MacHeist a long time ago, refused to load afterward, with a "wrong architecture" error.
  • Several of the plugins I have installed in Bitwig, my DAW app, also failed to initialize; this included Ozone 8 Elements from iZotope.

I was just getting ready to throw in the towel and rebuild from Time Machine, but this obviated the need.

Edited to add: Please pardon the thread necro, but I felt the above may be useful for other musicians who are still using older macOS versions.
 
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