KeyCd format
 

Hi all
I'm back for a question...
I need a key cd to upgrade an Mk3 navi to V22.
It's right now to V17 sw...ok, I taken key cd sw here and I burnt with CloneCd.
After few minutes Clone say me that it was burnt successfully.
When I try to open cd Windows say me that is impossible to open disc, maybe due an incompatibile format.
Is this right?
Shoul I burn it in a special mode?
Will works( cd is not for me and I can't try it)?

Thanks