In my environment I am using virtual Vcenter Server [Windows VM], any idea how we can upgrade the VM Version of the same ?
I would like to know any command line option from ESXi host will be there as the vcenter it self running on VM.
By VM version you mean virtual hardware version ? if yes below is the command to do from ESXi shell
~ # vim-cmd vmsvc/upgrade
You can find the command syntax and with some examples in the Documentation page