Brand new 5520 out of the box was shipped with CIMC 4.0(1a)
We intend running 18.104.22.168 on this appliance and the release notes state to install 3.0(4d)
Even the latest 22.214.171.124 say the same thing. No mention of CIMC 4.0 anywhere.
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It should be ok. I would double check with TAC for sure.
I would not downgrade CIMC that came with 5520.
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Ok if that’s safe to do then I will do so. If you tried doing that to an ISE server you end up breaking the appliance because of Secure Boot.
I just finished upgrading several 8540 CIMC from 3.0 to 4.0(2g) before this news broke.
The upgrade takes about 65 to 70 minutes per unit.
If you want to breakdown of the times, let me know and I'll post it tomorrow.
Hi @Leo Laohoo
thanks for the positive confirmation. I only have two 5520 controllers to upgrade. I have downloaded the ucs-c220m4-huu-4.0.2h.iso and I will mount it via the vKVM. Luckily I am in a preparation phase and therefore I am not time constrained. My main aim is to NOT brick the brand new appliance ;-)