03-11-2016 08:29 AM
Why don't you just simply roll back the EOSU 2 to its' previous version, before you updated it? It is a fairly safe bet that Windows created what is known as a "restore point" when it installed your update.
Uninstall the update. What's the worse that can happen? The camera won't download images. I think it will, though.
03-11-2016 09:00 AM
03-11-2016 09:10 AM
I can't see that EOSU 2 or 3 have a problem, but I could reinstall them and see if they do
Well, according to you, you installed an update to EOSU 2 and it stopped working with your 5D.
Conclusion, the update is the most likley cause of the problem. Remove it.
03-11-2016 10:45 AM
3 months ago, I bought a 2007 version 5D experimenting something. I tried to tether to different versions of Windows - from 7 to 10 and with different versions of EOS utility (the oldest is from one disc for 40D and the latest being the most updated on Canon website. I made many attempts and even I switched to connect to PC in the menu. Nothing worked.
Until I discovered the link I quoted in the above post, I took out a 10 years old compaq Laptop with Windows XP. Connected the 5D and it worked at once. Not sure which version of EOS utility was installed but possibility the one that came with 30D or 40D.
This is my personal experience and not base on assumptions and guessing.
03-11-2016 10:50 AM
To boristhemoggy - when you got your 5DsR did you install the software using the disk that came with the camera? If so, the installer would update any existing Canon software with the same name, so you might have inadvertently udated EOSU2 from the version that worked with the 5D to the version that comes with the 5DsR, which, according to its manual, doesn't support the 5D.