Unable To Access To Previous Version v3.0 of Netflow Analyzer

Configuration Wizard states that my running database is not 3.0 version and unable to continue, saying that database need to be upgraded to version 3.0 first.
Previously, I used a version 2.2.1 installed at this Pc, but I haven’t try to upgrade it. I need properset up. I assumed that I've already uninstalled version 2.2.in last month. I am free from Flow*.* or Netflow*.* tables in my database.
I am unable to access to the previous version (v3.0) of Netflow Analyzer.

Before upgrading to Orion NTA 3.1 you must install Orion NTA 3.0
Please update your current installation to Orion NTA version 3.0, and then return your upgrade..
Do you want to continue with this upgrade?
