All about the Roland Jupiter-series

Does anyone here have image files of the latest OS for the Jupiter 8?  
I think 3.4D was the last one.  I have 3.3D.  I am not sure what ROM 
A,B and C versions are?

Last question:

Does anyoen have extra parts for the Jupiter 8?  I am looking for the 
switch that has the post that sticks out.  I need a couple of them and 
the DAC 14 bit version.  I have the 12 bit version and need to get the 
14 bit version.

Let me know

Thanks