Rockin-B has updated his site with news of a mod for the VMU and other news :

It’s been a time of reorientation for me. After half of a year developing Rockin’-VR I have paused on this and am trying other things.
Untill I resume the work on Rockin’-VR it would be nice if anyone would ever find out why the usage of the Backup Library for Saturn destroys the system variable Per_Connect1(and possibly much more). This issue is really hindering me.
Not as a result of this reorientation but more for fun reasons, I put together a guide for the MoPoMOD. This is a simple little modification for the Visual Memory to save batteries and money.

Head on over to his site http://www.rockin-b.de/ for more concerning his projects.