XT 890 Black Display

my xt890 lcd screen and digitizer were broken so i changed them and the phone was working fine for a week, i then wanted to update to kitkat through oem update; everytime i tried it would give me error . i then read that since i unlocked bootloader and rooted my phone and installed cwm recovery i couldnt do an oem update and i had to do a factory reset in order to update through oem, so i did just that ; after the phone finished factory reset and booted i proceeded with oem update while the phone was charging, everything was going fine the file was downloading, i went to the bathroom and came back the display was black, but touch screen was working fine...through more searching i read that this could be from the update, and i should do another reset... since i couldnt see anything even recovery menu. i downloaded moborobo so i can see my screen on pc and proceeded to factory reset ... now i cant even see through moborobo and im stuck. Please help.