if you are on 629 you are probably out of luck .( and should have stopped OTAs long ago !! - looks like psouzas method doesn't work on 629... Motorola sucks
a work around has come by for this problem. I tried it out myself and it works quite well.
I used RSDLite for the flash and Pete's Tools for the root and so far, things are going smoothly for my D2G.