http://www.makayama.com/dvd122engfaq.html
Just download the full update...your version will then be updated on your computer. If I remember correctly (because I've only updated this once so far, you also will need your registration number as you will need to re-enter it. Not unless of course they have done away with having to do this in their new version releases. Like I said, it's been awhile since I've done an update.