how to downgrade firmware?

I am running a Vera Edge.

The upgrade to 1.7.1598 started causing some issues in my Zwave network described here:

http://forum.micasaverde.com/index.php/topic,35236.0.html

I attempted to downgrade to 1.7.1569 using the settings->firmware page of the web interface. I put in the URL for the 1.7.1569 firmware, and the downgrade appeared to work, but then my edge just immediately upgraded back to 1.7.1598 .

Is there a way to prevent automatic firmware updates? Did I follow the correct procedure for downgrading firmware?

I have faced the same issue