iPod touch Unknown Error (5) when updating to 2.0.

I keep getting unknown error (5) when updating or restoring with the 2.0 firmware. It had 1.1.3 jailbroken on it, I restored to 1.1.3 clean.

I'm using windows XP, and ibrickr to force the ipod out of firmware update mode.

It's probably some small detail, but I can't get itunes to take the 2.0 firmware.

Any ideas would be appreciated. Thanks.