OpenManage Enterprise CMC upgrade failed

Hello, I'm trying to become more familiar with new OpenManage Enterprise Appliance.

Couple Dell M1000e chassis was added and discovered successfully. I was able to add Dell catalog and run compliance report, I see that latest available version of CMC is 6.00 and mine is 5.20.

But everytime getting Task Failed message while trying to upgrade CMC on Dell M1000E chassis, although according Dell M1000e logs user logged into chassis as wsman account