Run the below commands on the ESXi and check what firmware version is being reported -
To list the devices - </usr/lib/vmware/vmkmgmt_keyval/vmkmgmt_keyval -d>
To fetch the information for a specific adapter - </usr/lib/vmware/vmkmgmt_keyval/vmkmgmt_keyval -l -i vmhba4/qlogic> --> Replace vmhba and qlogic as per the output obtained from the first command.
Cheers,
Supreet