Putting an Arduino Mega 2560 into DFU Mode

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hi, bought fake mega 2560 off of ebay. however, planning on using power usb midi controller, wanting load hiduino firmware onto it. i'm familiar dfu mode on software side of things, i'm unsure how put board dfu state. attached images of board (since not official arduino brand board) below in case might help. thanks!

your board not have 16u2 usb/serial controller, can't go dfu mode, , can't usb midi controller.  (it looks ch340g-based board.   the ch340g seems work fine usb/serial converter, it's not reprogrammable - usb/serial.)



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