Roland

Make sure you don't have the phone plugged in with the USB when you press the connect button

have the USB plugged into your phone (phone must be off)
Press the connect button on XS++ (or on SETool2 lite)
THEN plug in the USB

if it STILL won't connect.. you have some problems, take a look at the USB connector that goes to the phone, there should be 4 pins. Is there? I had a USB cable that had a sticky pin and it never popped back up to make contact, therefore the phone would not connect to the USB

Good luck