topic 5D mark III firmware won't update in EOS DSLR & Mirrorless Cameras

5D mark III firmware won't update

mantarayx — Sun, 04 Dec 2022 23:53:50 GMT

Hi -- I'm trying to update my firmware on my 5D. I download the file appropriate for my mac, put it on an SD card, stick the card into the camera. But it's not recognizing the software on the card. When I open the file on my computer, it doesn't seem to have anything other than PDFs. What am I doing wrong?

Re: 5D mark III firmware won't update

jrhoffman75 — Mon, 05 Dec 2022 01:42:03 GMT

After you download the file from the website you need to open the folder and copy the .fir file to the root directory of the SD card.

The PDFs you see are the instructions. Good idea to read and understand thoroughly before you start; bad things can happen if you press buttons or lose power for camera.

Re: 5D mark III firmware won't update

amfoto1 — Mon, 05 Dec 2022 03:09:13 GMT

I agree with John...

You should open that folder marked "update-procedure" and read the PDF thoroughly, follow the instructions exactly.

It is not hard to update firmware... But it's also not hard to screw up and that can mean having to send the camera in for service, to get it working again.

***********

Alan Myers
San Jose, Calif., USA
"Walk softly and carry a big lens."
GEAR: 5DII, 7DII (x2), 7D(x2), EOS M5, some other cameras, various lenses & accessories
FLICKR