Roll back from v9 to v8

Hello,
How do I roll back from v9 to v8? My systems have been unstable since v9 was installed esp. with USB devices.
Thank you

 

Hi sledge93,

Please follow the KB Article given below to remove the Parallels Desktop 9;

http://kb.parallels.com/116992

To install the Parallels Desktop 8 on your computer follow the steps as suggested at http://kb.parallels.com/114623