reply to Oregonian
Re: [Troubleshooting] MiFi 4620L Firmware Won't Update I'm using Mac OS X 10.8.2 with Firefox 15.0.1, Safari 6.0.1, and IE9 under Windows 7 in VMWare Fusion. I also tried it with Safari on my iPad 3. It seems to not be an OS or browser issue.
 I just tried Chrome 22.0.1229.79, too. No go.
I'd say you've just about covered it for all of us! Based on your results and mine, I would agree that it is not an OS or browser issue. Thanks for posting.