The Esri Business Analyst Desktop setup package is designed to detect and upgrade an existing installation: 10.2.2 or 10.2. If you already have version 10.2.2 or 10.2 installed, the setup will automatically upgrade it to 10.3. Additionally, you can install Esri Business Analyst Desktop without having a previous version installed on your machine.
Prior versions (or vintages, i.e. 2014 Data, 2013 Data) of local Business Analyst Data can remain installed when upgrading to the most current vintage (2015 Data). To switch between vintages, open the Business Analyst Preferences > Dataset tab and toggle to the desired year under Current Dataset.
Checking for updates
If you have access to the Internet, you can check for updates to Business Analyst by selecting the Business Analyst Update prompt in the Business Analyst program menu. From the Start menu, go to ArcGIS > Business Analyst > Check for Business Analyst Updates. When the dialog box appears, click the Check button to see if there are any available updates. If updates are available, you can choose to download them and also run the updates after they are downloaded. For more information, click the Help button on the dialog box. Please note that to check for Business Analyst updates, ArcMap™ and ArcCatalog™ must be closed. If you are unable to run the automatic update utility in Business Analyst due to local security protocols, you can download the latest service patch from the Business Analyst Resource Center and run the patch locally.