How to backup Previous DAZ installation perfectly (or nearest)

Atanacius

I posted this post in another forum, but I think, I wasn't on good forum, so I repost here.
(if I obtain answers here, I will delete my old post in the other forum!)

Hello guys, I want update but I'm fear that it won't work once updated (I mean.. after reading all the posts in previous pages in the DAZ Releasing an Update to DAZ Studio topic)..

I want know..

How I can backup perfectly all my DAZStudio Previous installation ?
(Just DAZ Studio setup and all plugins that it come with base installation).
I have actually: 4.9.1.30

If I ask this, it is because if things goes bad or some features I liked that will be missing.. able to rollback in those case (restore previous installation that was manually backup)

I thank you so much for any efficient answers ! :)