How to Restore Amazon Update?

I followed this thread, had everything going well, but then I began having strange issues with my device. I tried to clear VireLauncherPro's cache, but then that screwed up my Google store. I tried to restore it via the tips at the end of the linked guide, but VireLauncherPro began to act erratic, and the Play Store began to cease working again.

http://forum.xda-developers.com/fire...ustom-t3113311

Now I want to update back to 5.x and start the process all over again as a factory reset still leaves left over from Google Play and such, preventing me to do the hack from 4.x.
Thanks in advance.