Thanks David.
I did read the 101 - that's where I started. I tried the Upgrade from both the main page and System Settings - I just tried again as you suggested and this was the result (I also tried with the slashes turned the other way "\" instead of "/") :
View attachment 79912
View attachment 79908
I'm able to modify settings (removed EZVIZ logo, changed WDR, view the camera feed, etc.) in Batch Config - it is only the upgrade that seems to be an issue.
I also tried this from the System Maintenance dialogs and you can see "Upgrading Failed" using this method as well:
View attachment 79910
Any other suggestions would be appreciated.
Thanks again!