Each type of cluster update requires a specific PAK file. Make sure you are using the correct one.
Download the Correct PAK files
To update your vRealize Operations environment, you need to download the right PAK file for the clusters you wish to upgrade. In case modifications are required, you can manually update the hosts file after completing the software update.
To download the PAK file for vRealize Operations, go to Download VMware vRealize Operations page and select the correct version from the drop-down list.
If you are using cloud proxy, download the vRealize Operations Manager - Virtual Appliance upgrade .pak file with Cloud Proxy file from the Product Downloads tab, to update the vRealize Operations environment and your cloud proxy together.