Upgrading win 3.0.12

I would like to upgrade our win 3.0.12 version to the latest RT release
the installation guide (which is still offline at the moment)
says that it should be possible to use SVN to do this.

Is there someone here that has already done this ?
any issues to watch out for ?
(besides having a good backup ofcourse :wink:

thanks,
Filip

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