VMware vMA can be updated using its management UI. The vMA appliance can look for updates and provide an option to install them if available. However, if your vMA appliance does not have access to the Internet, then you will have to decommission the existing vMA and deploy the newer version.
To perform the upgrade, you will need access to the vMA management UI. The URL for the same can be found at the start screen of the appliance virtual machines console. The syntax is
https://IP Address of VMA: 5480.
The following procedure will guide you through the steps required in updating the vMA appliance: