I found a working bda driver for the Freecom DVB-T Stick with a letter in the serial number (manufactured after January):
It's the DNT Vol. 5:
http://www.dnt.de/dl/97/BDA%20-%20Treibe...0Vol.5.zip
It's the DNT Vol. 5:
http://www.dnt.de/dl/97/BDA%20-%20Treibe...0Vol.5.zip