wish to revert to old software given 4.1 problems

So - today the system prompted me to update to version 4.1. I did this. However it failed to tell me that i needed Mac 10.6.8 or better. I am running Mac 10.5.8 (Leopard).

Now - the system doesnt allow me to access 4.1 to uninstall.

I can still access the old 3.5.2 controller - however - all my bridges , play5's appear to be on 4.1

How do I revert the bridges etc back to the old software

Also - under 3.5.2 - it does not allow me to access radio or my music library (and doesnt even give me the option of connecting to a new music library)

Am pretty peeved with this as there was no warning on updating the software that I would need snow leopard or better on my mac. Have now wasted several hours on a saturday morning trying to resolve this.

Any help would be appreciated.

Thanks