Root for Lollipop 5.1.1

[Beat Breaker]

What method is currently working and safe for rooting my Tab 4 8.0 T330 ... I just dont want to brick my device, and i only want SU permissions, not to flash another rom, because i dont want to lose my current setup.

Lollipop 5.1.1 OTA update

 

[Ava Android]

Maybe TowelRoot? Or another one-click root?