If you can achieve a solid blue sync light with any previous version of the drivers then it should work with UC 1.7.4
Use this article to fully remove all traces of previously installed versions.
Download and install UC 1.7.4
Once installed and your FireStudio connected and powered on, go to Device Manager. You might see a FireStudio with an exclamation. Right click and Update Driver Software. Search Manually and click the Browse button. Navigate to C:/ Program Files / PreSonus / Universal Control . Click Next and OK.
FireStudio should now achieve sync.
Open Universal Control and click Settings menu on smaller window. Check Firmware and Factory Reset.