When XS++ says to press the C key and connect the cable you need to:
1. Turn off the phone(if it was turned on)
2. Remove the battery, wait a few seconds(2-3 seconds is enough) and put it back, but DO NOT turn the phone on
3. Press and hold the C key on phone and connect the DCU-60 cable(data cable, what comes with phone).
4. When you see some progress on XS++ status window(on left side) release the C key.




