Root access

[Wilrik95]

hello,
i have updated my xiaomi mi3 to miui v6.
but i don't have root access any more.
how can i fix it?

 

[Onoyz]

Just open security app, than choose permission, then choose root access,

 

[gagandeep singh]

will my warranty remain intact if i flash my miui on xiaomi mi3 with the cynogenmod or any other rom? and will the performance improve?