I bought a legitimate copy of Windows 8 Pro Upgrade version about a month ago. While doing a clean install on my desktop computer, I found out that you cannot do a clean install from an upgrade version of Windows. I figured out how to do a clean install of Windows by following the steps on this website: http://lifehacker.co...an-upgrade-disc
When I open the Windows Store App, I can't find the option that lets me update to Windows 8.1. Is there anyway I can legitimately update my copy of Windows to Windows 8.1?