I bought the Cubase Elements 9, how i change to 8.5?

Hello everyone! i bought yesterday the Cubase Elements 9 but i cannot use it cause my windows 10 OS its 32bits, so maybe i will change it! But i want to know if i can download a 8.5 version or update my CUBASE ELEMENTS 9 TO 8.5 or 8? Anyone can help me with that ?

http://www.howtogeek.com/228042/how-to-switch-from-32-bit-windows-10-to-64-bit-windows-10/