Go here scroll down to where it says “Cubase 7.5 complete installation”, download the two iso files. They contain everything for a full standalone installation of 7.5, so you can uninstall 7.0 - which you can do before installing 7.5.
Go here scroll down to where it says “Cubase 7.5 complete installation”, download the two iso files. They contain everything for a full standalone installation of 7.5, so you can uninstall 7.0 - which you can do before installing 7.5.