This post is for those using the dot-method to revert to iTunes 10.7. One reason people revert to iTunes 10.7 is because it is a superior way to manage a very large music library. However, these same people probably use modern apple devices (iPod, iPhone, iPad, etc…).
If you only have one computer, it is possible to create two iTunes libraries. Then switch between iTunes 12 and iTunes 10.7.
Newly updated on 4/10/2019: This guide works to revert all versions of iTunes 12 to iTunes 10.7 on all versions of Yosemite, El Capitan, Sierra and High Sierra. It is very likely it will also work with Mojave (but I haven’t tested it yet).
You know the drill: each time you install a major release of OS X you automatically get an updated iTunes. As a die-hard devotee of iTunes 10.7 you’ll want to revert from iTunes 12 to iTunes 10.7.
Unlike most guides, this one shows you how to revert from iTunes 12 to 10.7 without losing Mac App Store’s (MAS) functionality. MAS is Apple’s delivery mechanism for all its applications, system software and security updates.
You will also learn how to cure any download issues that you may encounter.