yup had a b1tch of a time getting to work cause they say to make a bootable dvd well i have not been able to get that to work but this worked for me.
How to format a USB memory key
after you do everything just copy over the files then change boot order so the flash key it first. At boot tap space bar you should get nothing but a blank DOS screen then type dir to make sure that you are in the right place to run the update. you should see the flash utility run it and flash away just make sure your in ide mode or it won't work.
PS really easy for me this way the way they say to do it is a pain in the but and from what i can tell won't work on a bootable dvd.