Step 2: Press Cmd+Space keys to open Spotlight Search, then search for Terminal and open it. Step 1: If iTunes is open, force quit it by pressing Cmd+Q. How to Downgrade iTunes 12.7 to 12.6 on Mac Note: We recommend that you take a backup of your computer before performing this downgrade so that you can safely restore from a backup in case anything goes wrong and you lose your data and files. In this tutorial, we’ll show you how to downgrade from iTunes 12.7 to 12.6 on Mac and Windows. But for those of you who really require the old version of iTunes, the good news is that you can easily downgrade from iTunes 12.7 to iTunes 12.6. If you have updated your device to iOS 11, then we recommend that you stay on iTunes 12.7 and avoid downgrading. You can still manage and download apps via the native iOS App Store on iPhone, iPad, and iPod touch.
While the new version of iTunes adds support for iOS 11, it also removes the iOS App Store as well as the ability to ability to sync apps and ringtones on an iOS device using iTunes. Apple recently released iTunes 12.7 for Mac and Windows which brings some notable changes that could affect your iTunes workflow.