Hey there,
To re-load the demo song I think you would have to revert to an old operating system, as the additional space for banks E, F, G, and H is created via deletion of the demo song.
Older versions of the Virus OS can be found on the Access webasite at:
http://www.access-music.de/support.php4
Also, there are a ton of free banks/presets on the Access website for your Virus at:
http://www.access-music.de/downloads...ct=virusc#cat2
I hope this helps.
Welcome to the forum! Enjoy your Virus Rack Synth!!!
-Alex