Xt910 dead after safestrap please help!!!!!!!!!! topic

Hello, yesterday i got an xt910 from a friend and updated it rooted and other things, everything going good, untill I updated the safestrap to 3.65, after that my safestrap stopped working and i unnistalled it and installed the 3.71, right after that i clicked reeboot to recovery and my phone never turned on again, until now.... I turn it on appears the M logo red, after that the screen is all black, if i turn off my lights i can see that the LCD is on, but nothing on it, and it stays like that till the battery is 0%. I recharged during this night woke up and nothing, now i oppened removed the battery and suddenly appears the menu to choose the fast boot recovery and etc, but as im stupid i tought it was good, so i didnt recovered from apfastboot now it wont turn on to that screen again, doesnt matter witch combo of keys I used, i tried everything, someone please help me