Doug, Check out this site. The Firmware Page: http://forum.rpc1.org/dl_utility.php Scroll down this page to find the process for Macs. I know that some people have used the PC exe file and placed it into some type of shell folder to have it work for Macs. I cannot remember how it was done, but it seems to do the job. I imagine that this web site should have a few answers. As I recall from various list posts the process once understood is quite easy. As for myself, I simply took the drive and placed it in a PC and downloaded the update. It took less than a minute. Most of the time was spent taking it out of the PC and placing it back into the Mac. All in all it took about ten to fifteen minutes. Good luck! Bill