I have downloaded several V570's via USB to Unitronic's mini USB. Using same PC and cable the next two 570's we had no communication, USB cable was unrecognized in device manager. I was able to use port 1 and USB to RS 232 to program unit, but still need to know what is going on. (usb to usb is so much easier) Is the USB port bad out of the box?, Did I somehow kill it? or is there some sort of workaround. Any help would be appreciated.
Matt Top.