Interesting! I have a specific CF card I use for firmware updates, although I don't really know why - probably because the card is pretty useless otherwise. It was the first one I bought after getting my 7D...I ordered the 7D from Amazon with a pair of 8 GB Extreme Pro 60 MB/s cards, but the camera came first, so I stopped by a local shop and bought a 2 GB Ultra II so I could take pictures immediately. But...I've never had any issues with a firmware update.![]()