Have you try to use 2.1 certificate to activate vista? I thought they should be backward compatible...
Tip I have a Toshiba satellite model L300-1bw which i upgraded the bios to latest v1.9 then i activated it, but i had to use opatool to choose a different certificate than the above cert, I used slic dump to check my previous cert name and then figured and changed to different one chosen from opatool, so now my laptop are activated!!!