You have a Cubase 7.5 license, why not download Cubase 5 from the Steinberg site (your license covers old versions of Cubase). If you want to risk putting a ‘cracked’ version on your machine, have at it. That’s not the brightess solution. 
You have a Cubase 7.5 license, why not download Cubase 5 from the Steinberg site (your license covers old versions of Cubase). If you want to risk putting a ‘cracked’ version on your machine, have at it. That’s not the brightess solution.