Apple's Bluetooth Firmware Update tool refuses to update my firmware. And I'm not alone from what I read in the discussion forums. Perhaps I'm already on the latest edition, but I've been having real problems when recovering from sleep (the DBT-120 USB bluetooth module won't come on in most cases, and the blued daemon has to be kill'd) so I suspect I don't have the latest version.
Someone going by the ID of mactechconsulting of Hampton Bays, NY, posted a way around this problem which forces the updater to update your firmware: simply hold the Option key down while starting the update! The full thread can be found here.
Thanks Mac Tech Consulting! :-)
Mac OS X Hints
http://hints.macworld.com/article.php?story=2003101711391132