Bluetooth update

So my Garmin c580 began downloading and updating its firmware the other day and I was like ok? so it finished and then began a "bluetooth firmware update" but it sat at 0% for my entire 20-25 minute journey. I work on PCs for a living, so I know the danger in interrupting a firmware update so I left it turned on while I went to work. When I returned at lunch the screen was black so I hit the power button. Immediately the screen came to life but it was still sitting at 0%. So I held the power button down till the unit powered off. I quickly pressed the power button to make sure the thing hadn't fried itself. Much to my relief it returned with the familiar "warning screen" and continued on. I turned it back off and went back inside to finish my lunch. When I went to leave for the day after acquiring the satellites it began the bluetooth firmware update again. Once again it sat at 0% for the entire ride. Now each time I try to use it it does the same thing after it contacts the Sats. My question is this, Is there a way to turn off this auto-updating? I don't see anything in the manual and the website only describes updating firmware via the web.