
dfucons.exe is a command line based utility which uses the 
TUSBAudio API to do a firmware update.
Note that DFU firmware update is also integrated into the GUI based
control panel application. So dfucons.exe is required in special cases
only, e.g. in order to revert the firmware to the factory default.

To use dufcons, install the (customized) TUSBAudio driver for your 
device and copy dfucons.exe to the driver installation directory on 
the target machine, this is the directory where tusbaudioapi.dll and
custom.ini resides.
