Follow these general guidelines when you install a new version of SAP Sybase IQ.
Choose an appropriate installation directory. You cannot install SAP Sybase IQ in the same parent directory as an earlier version. Uninstall the version currently installed on your system, or install in a different parent directory.
Upgrade your client tools. Although you can use the current version of the client tools to connect to an earlie server version, some options, tools, and objects may not be available.
Migration Guide > Database Upgrades