How to put Arduino Mega 2560 in dfu mode?

What is the hardware connections and steps to be taken to put the Arduino Mega 2560 into DFU mode? Please show which pins/points are to be connected where with reference to this diagram:

You need

  • to connect short two pins of 6 pin connector, the nearest to USB, Windows will sounds "Device disconnected",
  • then you install driver manually from C:\Program Files (x86)\Atmel\Flip 3.4.7\usb folder,
  • now is the new Device connected as "ATmega16u2", this is DFU mode.