update/patch your vCenter 6.x Appliance using iso and cli

To update/patch your vCenter 6.x Appliance, please follow the below steps:

1. Download VCSA patch from here.
   
   

   Product Patches - VMware site.
2. Take a snapshot of VCSA.
3. Connect downloaded ISO file to the VCSA VM.
4. Log in to the VCSA via SSH.
5. Run the following command.

   Command> software-packages install --iso --acceptEulas
6. Accept EULA and wait till patching/updating will be finished:

   [2015-04-28T15:15:12.118] : Staging software update packages from ISO
   [2015-04-28T15:15:13.118] : ISO mounted successfully
   [2015-04-28 15:15:13,198] : Running pre-stage script.....
   [2015-04-28T15:15:14.118] : Verifying staging area
   [2015-04-28T15:15:14.118] : Validating software update payload
   [2015-04-28T15:15:14.118] : Validation successful
   [2015-04-28 15:15:51,055] : Processing software packages in update payload 36/36
   [2015-04-28T15:16:18.118] : ISO unmounted successfully
   [2015-04-28T15:16:18.118] : (34) packages staged successfully
   [2015-04-28 15:16:18,694] : Running test transaction ....
   [2015-04-28 15:16:24,707] : Running pre-install script.....
   [2015-04-28T15:18:23.118] : Services stopped.
   [2015-04-28 15:18:23,082] : Upgrading software packages ....
   [2015-04-28 15:21:04,355] : Running post-install script.....
   [2015-04-28T15:21:05.118] : Packages upgraded successfully, Reboot is required to complete the installation.
7. Reboot VCSA by running:

   shutdown reboot -r updating
8. vCenter Appliance build should be changed

New VCSA build version.