After I root my Samsung Galaxy Mega 6.3 (GT-i9205), I downloaded SuperSU from XDA Forums. After I open SuperSU, it asks me to update my
The SU binary needs to be updated. Continue?
But after a long time, it got stuck on
Installing, please wait. If you see this message for more than five minutes please restart and try again.
Then I tried to check whether my phone is rooted or not by using a root checker. At last, the answer is does not have proper root.