Of course, you’ll need a copy of an old APK to rollback to.
You might want to consider creating a backup of individual apps before you install an update.
AppDowner(Free) | XDA Developers Forum viaXDA Developers Blog
AppDowner Downgrades Android Apps to Older Versions
Android: Sometimes upgrading an app means losing features you love, or getting a slower app in the process. AppDowner makes it simple to install old v
