mymobilein micromax canvas nitro a310(kitkat 4.2.2) .i have rooted my mobile with kingoroot few months ago and super su is installed in it.,.now suddenly after rebooting my mobile in unrotted itself and super su is saved as a default app and its not deleting.if i try to root again its showing not rooted and rooting process is failing.when i open super su it says "no su binary installed...please help me someone..thank you