For anyone doing the update via RButil, don't make the mistake I just made - make sure you have RButil install a new copy of the bootloader as well as the updated build.
P.S. to the developers -- THANK YOU -- the only thing I hated about the fuze was having to boot into the crappy OF for data transfers, especially when you unplug and have to wait 10 minutes for it to "refresh database" *shudder*.