So far this is the best I have come up with for you.
Had to goto the Taiwan site for this
Your code is NOT listed but scroll to the bottom of the pdf for a huge list.
The latest bios is here
Release Christmas 2006 support 65nm AM2 chips.
Other than that, I am empty handed. I've looked through the USA and Taiwan site. I don't remember have support issues in the past but this is certainly an issue. I mean any hit on search for RR brings me road runner... Clearly no instances of RR have been posted. Argh