Hello Andrew_R
At the hardware level, below are the latest versions of firmware supported:
HPE Virtual Connect Flex-10/10D Module for c-Class BladeSystem: 4.80(20 Dec 2019)
https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_8fbad74a31174f3982e1fe53c3#tab4
HPE BladeSystem c-Class Onboard Administrator: 4.95(6 Nov 2019)
https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_b9c6229f881e45f19089d17115#tab-history
Revision tab will have all the previous versions of Firmware. By this, you can download the previous versions & perform an increamental update. We recommend to take a configuration backup of the VC & OA modules before & after the firmware upgrade each time. This is a Best Practice to restore the configuration if the upgrade fails.
We recommend doing a upgrade with every alternate version or two.
I hope the provided solution has helped you resolve the issue.
Kindly let me know if you have further queries or the status.
Thank you