Quote Originally Posted by Kombi View Post
I don't have a 7D yet, but I just updated firmware on my 550D. Despite meticulously following directions over and over I kept running into problems. Until I switched SD cards
my Duracell ProLine 64GB SDXC Class 10 Card would not let me upgrade... but my Panasonic 8GB Class 4 SDHC would.
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.