Can i do this or do i need to do it in stages ie 2.5,3.0 etc etc?
Sure, but you have to save your presets and after the upgrade you should do a reset (MASTER/COPYRIGHT INFO/+1/FACTORY SOUNDS/ENTER/CURSOR–>YES/ENTER) and then reload your own presets.
Have fun,
Rudi
No.
All the OS 3.x features except the additional program banks do work on all Voyagers. No matter when they were build. This is the way I like it ! Rudi is THE man out in the fields takinf care on those importent details.