how to upgrade the SQL Diagnostic Manager to 10.4 from 10.2

Hi,

We are using SQL Diagnostic manager 10.2 now and we are planning to upgrade into SQL Diagnostic manager 10.4 on the same server.

is it required to uninstall the older version (10.2) and reinstall them again 10.4  or just install the new version?

please let me know if we have any documents for the same.

Thanks & regards

Sanjeev K