Seems that the smart guys who built fbbuild have released an updated version that allows us to create 12625 freeboot nands. Not that we need this release since we have already hacked the 12611 to do the same thing. After reading the readme txt file it seems they just want to block access to xbl. So for anyone wanting to get on xbl or even try to , don't use this release.
http://www.megaupload.com/?d=876WGJNU