What is the latest version of iTunes that can support High Sierra and iOS14?

[mdwsta4]

I'm still using High Sierra on my 2016 MBP along with iTunes 12.6.3.6 because I liked the app management. The app management has been broken for a few months and now that I upgraded to an iPhone 12 Pro w/ iOS14, I receive an error message that I can no longer sync my phone and have to update iTunes.

Are there compatibility issues between High Sierra and whatever the latest version of iTunes is? I have two legacy apps (LR6 and CS5) that I'm not yet willing to give up and upgrade MacOS

 

[brianmowrey]

The update will be for the iTunes device support. It won't give you a version of iTunes that exceeds High Sierra

edit: booted into my HDD to check, 12.8.2.3 is the current up to date High Sierra iTunes version

 

[mdwsta4]

Thank you. This fix worked. Obviously got rid of the App Store, but it didn't seem like Apple was going to fix it at this point