It's finally fixed!
The update isn't rolled out atm, but i got it via email from razer tech support. Seems i had luck and a bit of good timing if it's not just not laziness. :D
The software version inside the surround sound app settings is 2.21.
What was the previous version number? I mean, was the number increased with that file at all?
e:
The log file says, that it's the same driver and configurator versions as my previous installation.
(C:\ProgramData\Razer\Installer_RazerSurround\Logs)
What I can imagine now is that they didn't have to update any drivers etc, but change the way in which they install and use them.