Oracle Utilities Analytics Warehouse 2.8.0.2.0 release supports the following upgrade paths:

To upgrade to Oracle Utilities Analytics Warehouse 2.8.0.2.0, you must first upgrade to Oracle Utilities Analytics Warehouse 2.7.0.1.3 if on an earlier version. Make sure all pre-requisites (JDK and ODI) are met before beginning the upgrade process.

For detailed instructions refer to the Oracle Utilities Analytics Warehouse Installation and Configuration Guide in the Oracle Utilities Analytics Warehouse documentation.