HARD BRICK ON LG G FLEX 2 H950 ATT [Black screen, no download mode]

Hi i tried to root my phone and got it bricked. I already tried lots of methods to unbrick but only got it worse, at first it was on a soft brick boot loop i used a tool to unbrick and when it was about to finish the app crashed and closed, my phone went dark and died right there. Now when i plug it my pc sees it as "QHSUSB_BULK" and i cant enter to the download mode or anything else (i did some research and find out that my phone doesn't have recoverty mode). I don't know what to do, if anyone can help me i'll be very greatfull.
To try to root my phone i followed this steps: http://forum.xda-developers.com/showpost.php?p=62119694)
To try to Unbrick my phone for the first time i followed this steps: http://forum.xda-developers.com/g-fl...-h950-t3171550 (Total failure)
Then i followed this: http://www.modifyandroid.com/stock-r...r-lg-g-flex-2/ (Used normal flash mode and app crashed so i got HARDBRICKED)
Sorry for my english it's a bit rusty :D

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