An AVA update refers to a new version of AVA, with bug fixes and additional features. If you have valid AVA Care Support, you can update your AVA software for free. The current version of AVA is v1.1.
An AVA upgrade refers to moving between AVA software levels. AVA software is available in four levels. As the level increases, you are able to control additional device types. If you have purchased an AVA licence level 1, 2 or 3, you can pay to upgrade to a higher level for more functionality.