Root Samsung S8 Sprint SM-G950U Nougat and install TWRP recovery On Samsung S8 Sprint SM-G950U Nougat. Here we are posting full root guide to root Samsung S8 Sprint SM-G950U Nougat with simple steps. Just install TWRP recovery on Samsung S8 Sprint SM-G950U Nougat 7.0 and flash superSu file to get full root access on your Samsung S8 Sprint SM-G950U Nougat.