after that , I tried OTA UPDATE . and messages started occurring in recovery like : installation aborted (status 7) and etc etc.
then , no matter how hard I tried I couldn't get the latest firmware having ANDROID MARSHMALLOW . and this one doesn't work in my phablet : 750M_USR_S000384_160325_ROW_QPST.7z
My device is now rooted having ANDROID LOLLIPOP+ROOT+TWRP+XPOSED .
and My query is : Can anyone get me the latest firmware based on ANDROID M or can anyone get me a CUSTOM ROM for my phablet based in ANDROID LOLLIPOP [5.1.1]