Just buy the real thing, it is worth it in my opinion.

You eventually got the other upgrade installed. I understand it was difficult. Did you learn something or make a system change to get it to finally work? Or was it sheer luck and trying over and over? My guess is whatever worked there will work with the other update as well.

And Markus is correct, the best forum for technical support is DUC. They do have support employees chime in to help solve issues.