I have CUCM version 12.5 up and running and then went back to install IM&P. The issue is I only have 12.0 bootable media for IM&P. So after going through the setup process, I get the error "Configuration validation with cucm (IP address) failed. Configured version 220.127.116.1100-12 does not match the version at (ip address)."
I can't seem to find a way to upgrade the IM&P bootable media before/during installation.
Thank you! it said non-bootable in the description, but I was able to use it anyway. The fist time I booted with it it gave me en error but I just shut down the VM and rebooted with the same iso and it worked the second time.