Try this:
If you want to check what chip is in your cable, or see if it supports NefMoto premium features, you can use the NefMoto ECU Flasher version 1.6.1.0 or later. Just select the USB device and then hover your mouse over it. It will display all of the info about the FTDI chip in the cable and say if it supports premium NefMoto features.
You might just have a bum cable... but who knows.
Any reason why you didn't bother to buy the ones listed in the "approved cables" thread?