[Where to buy an updated FSX Booster download]

Hi, I've been looking into buying the FSX booster. I have noticed the amount of issues that users have had, which I understand is normal with any software. My computer is low end and I'm very interested in getting the most out of my system that I can. I would like to purchase the product from fspilotshop.com, but it does not say what version it is, 1.0 or 1.3.6.0 (which if I'm not mistaken is the latest version). If it is the first version with all of the issues, what is the easiest way to update to the latest version, or, where can I purchase the fully updated version?