| @lypen17
if say usb device not connected, just make sure the usb drivers are installed. If the usb driver are installed than you have just to plug cable from phone in and out and ok.
@siemens man
for c450 flash mode you will not see nothing on the screen, so i suggest to keep phone off, insert cable in pc, than into phone and only than you have to keep pressed the * and # button and press ON button. You will hear this sound from your PC that a usb device is connected. After that you press unlock and thats it. |