Has anybody updated the firmware on their 40mm 2.8 pancake? I only experienced the autofocus problem once, after picking up the camera when it was in video mode, so I'm not sure i have the problem. I tried recreating it several times, but autofocus seems to work. But should I need to update the firmware, I don't have a compatible camera. Instead of sending it in to Canon, I was just thinking of walking down to Target or Best Buy and using the T4i that's out on display, and attaching the lens and CF card. My only worry is that i'll take to long and the battery will die before it's done. Anybody know how long the firmware update takes? And if the battery dies in the middle of the update, will it make the lens unusable?

Kind of annoying that I can't update the firmware on my 7D, especially since the 7D firmware was just updated. You'd think they'd add this functionality...