How to change system name in iDRAC 4.40.00.00

We got a bunch of new R640 with iDRAC 4.40.00.00. Previously we set the system name with 'ssh root@ racadm config -g ifcRacManagedNodeOs -o ifcRacMnOsHostname '. However, as these new servers have iDRAC 4.40.00.00, the config command has been deprecated. We have get and set to replace it, but I haven't been able to figure out how to actually set the hostname now. According to https://www.dell.com/support/manuals/en-en/poweredge-r7525/idrac_4.00.00.00_racadm/ifcracmnoshostname-read-only that data is actually read-only, and thus can't be set. From what I can tell, this data is nowadays only settable by iDRAC as it reads that data from the server via the USB bus they have in common. However, this causes further problems: https://www.dell.com/community/PowerEdge-Hardware-General/iDRACs-SNMP-doesn-t-respond-steadily/td-p/7745917 . Meaning, we have to disable the dcismeng on our operating systems, because the SNMP timeouts were kicking in. This time however I'm working with ESXi, and that produced a new problem: https://www.dell.com/support/kbdoc/fi-fi/000142904/dell-poweredge-idrac-is-not-displaying-esxi-6-5-6-7-system-host-name-and-operating-system-correctly?lang=en . And apparently I have to start installing a service module in to the ESXi this time. Well, if it's works as it does in Ubuntu, I can't do that due to the SNMP timeouts it produces. So could we please have back the ability to set the system name ourselves?