Issue upgrading v5.14.00.16 to 5.16.00.14

Wanted to see if anyone else has had success upgrading from v5.14 to v5.16, via the console Gui? 

I've attempted a few times and each time after the upgrade completes to v5.16.00.14, however, I see no connectivity back to the Dell/EMC back end.  While on v5.14 I've got check marks on every connection for both port 443 and port 8443 under Connectivity > Network Connections and services. 

Upgrade to v5.16, and I see a message stating that it's "Unable to Connect to Dell EMC Server because a connection could not be established within the predefined time limit."

Revert back to the pre-update snapshot and it's fine and everything shows connected.  

I have a case open with Dell support that after 10 days is finally passed on to L2 support.  

Up to this point, I haven't had any issues upgrading when prompted via the console and probably have done 6 in-place application updates on this appliance.