Guys I need help got my phone bricked using some mi4 files??

I did this step http://ift.tt/25q0Rf6, i didnt know its for mi4 until now. my mi3 is all black now. no led lights. no boot. no fastboot. no recovery. is this goodbye for my mi3? im really sad right now :( please can someone help me :((( even miflash cant recognize my device right now. :<<<<

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