When I connect my canon rebel Eos T3i to my new MacBook pro the camera is not recognized and photos to not transfer

Well I finally figured out how to load the new firmware into my T3i. I downloaded it to my computer, plugged in my Promaster card reader to the laptop, installed a scan disk card into the card reader, and dragged the firmware onto my scan disk card. I installed the scan disk card into the camera and the camera loaded the new firmware when I selected the firmware option in the camera menu. When I connected the camera to the laptop the camera appeared on my list of items on my computer so I could load any new photos onto the laptop. it is simple once you are able to decipher the code.

I would like to, but if the computer doesn't recognize my camera, how do I install new canon software in the camera. I have downloaded the canon software for my Mac OS to my Macbook pro but that doesn't seem to make any difference. This is a little frustrating.

I use the conversion USB cable that came with the camera and the conversion connector from USB to USB-C that came with my new Macbook pro.

Thanks for all who responded. It helped me see the errors I was making. I really do appreciate the suggestions. Stay safe and healthy.