Thanks for this post, I just removed the home screen ads from my Tolino Vision 4 HD using apktool
I'll just add, System Versions 14-16 have an easy way to enable ADB and also access the aosp settings: Use the hidden debug menu. Access codes can be found here:
https://gist.github.com/hasezoey/d16...3132afe4714c7c
ADB is on page one of that menu, aosp settings on page three.