Is there any way to unroot other than sbf? The reason I ask is I used visionary to root my x and if I go back to that restore point and update my phone im afraid that root will not be possible with z4 or can I use the z4 app I've downloaded to unroot visionary....I thought there has to be an easy way to get rid of su. It seems to me there is were people have ran into problems....can I use root manager to to delete or my computer to get rid of that file??? Thanks