Downgrade NWDS

Hi,

We've installed CE 7.2 Trial on a Server.

When I try to deploy my product to it, I get the following error message:

The given network does exceed the maximum revision number. The given network has revision number 2.4 (Galaxy BPMN compiler as of NetWeaver CE 7.20. Give yourself to the dark side.) but maximum possible revision number is 2.2.

AS far as I understood, this means that there's a mismatch of verions between CE 7.2 Server (version of BPEM* components is 7.20 SP1 (1000.7.20.1.0.20091217211100)) and my 7.2 NWDS with version SP02 PAT0001.

Now here's my question:

As I'm not willing/able to update the CE 7.2 server, can I somehow downgrade my NWDS to the patch level SP1, so that I don't get the deployment error anymore?

Thanks in advance.