Well guys,
I found a suitable USB lead and connected everything up as the instructions state, software already downloaded onto PC, Progbox saying connected to PC, so switch on the esc and same problem, the Progbox says connection failed and this stops the software from running with the screen graphic saying esc is disconnected, you cannot get into the software update section at all for the Progbox to download this first.
If you try to download the software just connected to the Progbox it wants to connect to the esc.
I am totally lost on this one!