Unzip the downloaded folder on your computer. Look for the file named 5D200212.FIR Copy to Card: Connect your CF card to your computer and copy the file directly to the root directory (the main folder, not inside any subfolders like DCIM). Insert & Power On: Insert the card into your camera. Set the Mode Dial to P (Program AE) or any Creative Zone mode (Av, Tv, M). Navigate to Menu: button, go to the Set-up 3 (yellow) tab, and scroll to the bottom to find "Firmware Ver. x.x.x" Run Update:
Before you begin the download and installation, ensure you have the following: canon 5d mark ii firmware update 213 download updated