Using EOSMSG software, how to check the steps are as follows:
1. First plug in the data cable of the camera and connect it to the computer. Connect the camera to be viewed with the data cable.
2. Then, turn on the camera and press the button as shown;
3. Then, turn on the camera CD.
4. Then, enter the serial number of the camera, which is at the bottom or side of the camera;
5. After the final input, you can find your own shutter number.