As promised:
The new firmware & manual 3.02 is available here:
http://www.ghl-kl.de/Produkte/Aquari...LuxII_V302.zip
http://www.ghl-kl.de/Produkte/Aquari...LuxII_V302.pdf
The IP-address can be entered now directly on ProfiLux, please read chapter 3.15.16 Communication. And it is possible to change from ad-hoc to infrastructure-mode (only interesting for WLAN).
The attached photo shows entering an IP on the ProfiLux.