So, finally my Beosound 5 works as it should for the last 3 days. My dealer send me 2 B&O technicians and with their tips and help we managed to get this baby running!
I had to make the recovery 2 times because the unit didn't made the B&O softwareupdate correctly. Aftere the 2nd recovery I made the B&O softwareupdate and now the last SW Version 5.02 is correctly installed.
My Asus WL330ge had to get its power from the power supply and NOT via the USB-power-adaptercable from the Beomaster 5 USB port!
The Beomaster 5 USB port is absolutely sensitive ...
Now my Beosound 5 has wireless internet connection, Internetradio works like it should, the unit is powering down correctly (green led on the Beomasters' back turns red!) and wakes up in about 10-20 seconds.
Now everything works like it should! Perfect! I'm observing my unit but since 3 days everything works ... I can't believe it! :-)
The recovery should not delete your data but the B&O demophotos on the Beomaster 5 where gone after the recovery! No matter for me as I'm using it as a pure audiosystem. Just for your information.
So if anyone has a USB wireless lan adapter on its Beomaster 5 it could be the cause of some problems!?
I can highly recommend the Asus WL-330gE for using with the Beomaster 5! You just need to use the power supply and not the adapter cable for the USB port!