Hi, I need help and advice. I have never done this before and i wanted an expert to explain the latest way to do this because there are many ways out there to do this and I want the easiest so that my machine won't get destroyed by misinformation. My current version is 3.60. My demo unlock code is 1739. When this becomes a retail can i then update it to the latest of 3.73 and will it remain a retail forever? Or will it destroy it?