The latest firmware version for your camera is version 1.13. Before downloading and installing the firmware in your camera you'll need to check the firmware of your camera. The update is designed to update the firmware on a camera "C".
On your camera go to the camera setup menu and check the firmware that is currently installed on your camera. If your camera firmware is 1.12 then you'll need to download and install the new firmware. However, if you check your firmware and it's 1.13 there is no need to update your firmware.