EOS-1Ds Mark III Firmware Upgrade

[GreenGA]

I know this is an old, olllllllllllllld, body, but now that I ordered an R5, I want to update my 1DS Mkiii to the latest firmware version and use it as a backup camera.

I found out that the latest firmware version is 1.23, and I'm sitting 1.14.  However, as much as I go round and round and round and ... round on the Canon support site, I can never seem to land on a page that has a working download link.  I do find pages that have a supposed link, but when I click through, I wind up back on the (not so) merry go round.

Would anyone have a suggestion, or better still, a working link?

Any help will be greatly appreciated.

Thanks in advance.

[Peter · Accepted solution]

The SHA256 checksum for the zip file that I have downloaded from Canon is

34e11821e082f46344ed4fc7beb9d1b5c0cbd2679d7dc88801f1b9233f0f5e2b eos1ds3-v123-win.zip

 The 1Ds III firmware from Eoscard gives me the same checksum and is therefore identical with the one I downloaded from Canon.

Edit: I could still download it from Canon. https://pdisp01.c-wss.com/gdl/WWUFORedirectTarget.do?id=MDQwMDAwMDg5NTAx&cmp=ABR&lang=EN

[GreenGA]

WOW...  I cannot thank you enough!  And this winds up being a twofer.

1. A link to the firmware update I was looking for.

2. Finding out about the EOSCard website. I never knew it existed.  THANKS!

[GreenGA]

I could never find/land-on that link.

Now that I know it exists, I will go back and see if my luck is better the next time.

Thanks.

[Peter]

Choose Windows 7 and hit load at the bottom.

[GreenGA]

Thanks!

I followed your suggestion, and there it was.  I even tried Win 8, & 8.1, still there.  Tried 10, and it was missing.

Thank you, again, for the assist!