Open a USB Firmware Upgrade Tool (double click ofut.py). Case A is considered true from now on: TE USB FX2 module is seen under Device Driver as a Trenz Electronic Device.
From now on the procedure is the same for Open_FUT (gen 2) and Open_FUT (gen3): the only difference is the file used (current_dw.iic for generation 2 and current_te.iic for generation 3).