Mercedes Benz Xentry Diagnosis VCI C6, Restore Firmware？

Mercedes Benz Xentry diagnosis VCI C6, how to restore firmware？

1.Open VCI manager, click on recovery, see the guide (connect USB Xentry Diagnose VCI C6)

2.Hold the button for three seconds, the red LED lights up；

3.Recovery mode;

4.Recovery,Start recovery;

OK

5.Recovery successful;