I went to the Canon site to download the latest firmware for my Canon 5D Mark III, which is version 1.3.5. However, the instructions on the site tells you to verify the size, and no matter what I do or how many times I download the file, the size never matches. The site says the size should be 18.88 MB for EOS 5D Mark III Firmware Version 1.3.5 [Windows]. After downloading and extracting the file it is only 17.1 MB. How do I know if the downloaded file is any good before I apply it to my camera? I don't want to destroy my camera with a bad firmware file. If the file needs to match exactly, what should I do next?
