Analogue-sequencer

Hi!

Finally I could get hold of a P3. So far I'm totally psyched with this
thing. I was really dumb not to get one before. I've been looking for
a way to control midi easily for a lot of time and the answer seems to
be the P3. 

There is one thing that I'm not able to do yet and I'd like to know if
I'm missing something. I'd like to record live into 2 chained
patterns. Is this possible? The way it is now it seems that both
patterns are getting the same 16 step sequence. 

Another question is about V4. What is it? is it a new OS? is there
more information about it available? where can i download it?

If I'm starting to get my head around it I think I'll jump for the
most recent version.

Rui