Hi Tast,
File 'WUDFUpdata_01009.dll' is included in the BioSemi driver install package in the x86 subdirectory for 32 bit Windows and in amd64 for 64 bit Windows.
I'd suggest that you follow the instructions in "Driver Install Readme.txt" to first delete any existing BioSemi driver and then do a fresh install.
Be careful that you have the correct package for your version of Windows, i.e. 32 bit or 64 bit.
> PS:the The USB drivers (which is "USB drivers XPVista.rar")is downloaded from
www.biosemi.com.
I'm not aware of any file with this name!
Paul