Installing 6.5 + Halion and Symphony on another system

I had to replace the HD on one of my systems and I now need to get Cubase 6.5, plus Halion Sonic 1.6 and Symphony installed again. Can I just run the downloaded 6.5 update, the downloaded Halion Sonic 1.5 and 1.6 update, and Halion Symphony Orchestra update with my Elicenser usb plugged in? …or do I need to go through running the install disk’s from earlier versions and updating my way through?.. this would seem like a lot of extra work being the license for 6.5 and everything else is on the elicenser usb key. I realize this answer is probably somewhere easy to find (although I couldn’t find it) and I apologize for asking what’s probably a dumb question.