Hello, I just purchased a Samsung Galaxy Rush and could not get it rooted. I came here and found the problem right away. The instructions I had did not say to remove the battery before it reboots. Once I did that and then put the battery back in and started in Recovery Mode, then selected the SuperSU v1.25 zip file. It worked like a charm. Thank you, very happy. Now I can do all sorts of things like I should have been able to, since after all; I bought the phone and am not renting it. THANKS VERY MUCH!!!!