The site is working again, and I have the firmware updated. I used it last night on my flight to see our altitude and speed. I think there must have either been an error, or possibly a very heavy tailwind. It was showing over 600 mph SOG. The last time I checked, a 737 topped out about the mid-500 r...

Interesting. Even after the upgrade, it still shows 0.0Hz.

Did Dual go out of business? I'm trying to download the firmware to update the unit I just bought off Amazon, but whenever I go to the site, I get 403 (permission) errors. That's for the firmwarenew.html link, the index, and even the regular www. If anyone has the firmware I can upload from my Mac, ...