Read the previous other post  if needed

How to upgrade vCenter Operations Manager 5.8 to vRealize operations manager 6.2 part 1
How to upgrade vCenter Operations Manager 5.8 to vRealize operations manager 6.2 part 2
How to upgrade vCenter Operations Manager 5.8 to vRealize operations manager 6.2 part 3

Make sure you downloaded the PAK files from VMware site first to proceed.

vApp clusters

The vApp cluster requires the deployment of the OS upgrade and the product upgrade .pak files.

    • For an OS upgrade, the file is: vRealize_Operations_Manager-VA-OS-xxx.pak
    • For the product upgrade of vApp clusters, the file is: vRealize_Operations_Manager-VA-xxx.pak

More information can be found on the VMware website: http://pubs.vmware.com/Release_Notes/en/vrops/61/vrops-61-release-notes.html

Time to upgrade to vRealize operations Manager 6.2. So open your favorite browser and login to you master node. URL https://<master-node-FQDN-or-IP-address>/admin

Login with the user admin and password you set in the initial Setup.
vROM 6.2 login - 1

Click on Software Update  in the left pane. On the right side window you see a button “install a Software Update”. Click it
vROM 6.2 software update - 2

Now browse for the PAK file vReamize_Operations_Manager-VA-OS-version number.pak and click upload.
vROM 6.2 Pak file 1- 3

Wait until its finished and then click next. Accept the EULA and click finish to install.
vROM 6.2 PAK file 2- 4

Once complete log back in to the vRealize Operations Manager. You will have to walk through a short wizard. Click Next.
vROM 6.2 after upgrade 1 - 1

Fill in the Product key and click next. If you want you can sign in with the ‘Customer Experience improvement Program’. But that up to you. Click finish to complete the wizard.
vROM 6.2 after upgrade 2 - 1

Do this for both PAK files

vRealize_Operations_Manager-VA-OS-xxx.pak
vRealize_Operations_Manager-VA-xxx.pak