ATK Package install with windows 10 - where are the files?

Hello.
I have upgrated my ASUS ROG G55W laptop to WIndows 10, and ATK Package ver 1.0.0017 is installed by default. After checking some of the new stuff, I found a "ASUS Welcome" app. In this app some updates are poposed, and I found a newer ATK Package there. I downloaded it (ver 1.0.0038). Well, it did give a solution to 1 problem, but it just gave another problem, so I want to go back to the version that is installed by the windows-upgrade.
But where do I find this ATK Package ver 1.0.0017? I can't find it on ASUS' webpage, and I can't find it with google .

Anybody knows how to get this version back?
I had to uninstall it, before I could install the newer version, so System Restore tells me, that this program has to be reinstalled if I just use SystemRestore to go back to before I installed the new version.

Installed windows 10 upgrade on win 7 machine. ROG G74sx. I have had various issues from icons not loading, keyboard calculator as well as the start button not functioning properly. I think I have the icons loading now and the start/windows button working too but I've thought that before too. But with the keyboard the only thing I've been able to do is replace the keyboard ATK drivers with a standard PS/2 keyboard. I can't reinstall or update or remove the ATK drivers for the keyboard to this point. I think the ATK driver thing has something to do with the calculator key not functioning. It is a pain in the butt not having the calculator key working. I've tried a hundred things (a lot anyways) trying to get the keyboard working as before to no avail.