when you shut down your phone,wait 30 seconds and then when you are connecting usb to your phone make sure you are holding the volume down button and connecting (this will make your phone enter in flash mode)one connected the computer will install flash drivers (if pc seems to hang repeat the steps and when connected to pc press c button)after that your update procedure will commence...
To shut down your phone, first press the power and volume up button, wait until your phone vibrate once... After that, don't release the button. Keep press until it vibrate three times. That will make your phone shut down perfectly. In a "force" way for sure...
