In https://bugzilla.opensuse.org/show_bug.cgi?id=1202275 we got asked to update
"the firmware" of the only power8 testing machine we have available for
openqa.opensuse.org (o3).

You can see from which version we came from and to which version we updated
here:
https://bugzilla.opensuse.org/show_bug.cgi?id=1202275#c20

Apparently this update worked fine, except that we cannot access the system via
ipmitool any longer:

��� ipmitool -I lanplus -C 3 -H openqaworker-power8-ipmi.suse.de -U ADMIN -P
<redacted> chassis power status                                                 
Error in open session response message : insufficient resources for session

Error: Unable to establish IPMI v2 / RMCP+ session

We already tried several things including:
* changing passwords for the ipmi user
* switching from OPAL to PowerVM (some article in the wild internet suggested
IPMI would not work in OPAL) and back
* making sure IPMI access is enabled in the ASM
* full reset of the ASM back to factory settings

The machine is of the type 8247-22L. Is there anything we're overlooking?
As reference: our team communication around this topic mainly happens in
https://progress.opensuse.org/issues/116078

Sorry if this is in the completely wrong project but I couldn't find anything
fitting.