The error is rather strange. The update task shows 100% complete and successful. But if you look at the details you see this:
Results:
Downloading Packages.
Error Occured: Access is denied. Check the following: Credentials entered are valid, iDRAC is reachable from OME host and iDRAC is in a good state.
Software Update Task Failed.
But the idrac credentials are fine. It can update every other application type, but the OS Drivers fail consistently across all our R720s and R710s.
Is there any more detailed logging of the error anywhere?
Thanks for the info on the custom repository. But if possible I'd rather fix this problem and use the standard Dell repository.