This is like playing the piano.
We connect the charger (USB)
pressed the button on / off simultaneously with VOL +, the mobile phone after 8 sec. will vibrate once and spent another 5 sec. vibrating three times.
Quickly we dropped just the on / off button and turned off the usb cable, the red LED turns off and the device restarts.
Once the Sony logo appears we dropped the VOL + button and turn off the phone by pressing the on / off button.
Now is the unit off completely.
Now just connect ... and good luck