Bare metal debugging

I was using my TMDSEMU200-u BlackhawkDSP emulator to work with my BBB. Its a TI XDS200 JTAG device.
It is now bricked and I am trying to find out the pinout of the J3 connector to allow me to reflash it.
Does anyone know of any pinout information. So far I have had zero response from BlackhawkDSP
Thank you