How to use it? Install the app. It should show up as "L38C_NoobTool" in the apps. Install ministro 2 from the play store. Start the "L38C_NoobTool" app, it will start ministro which will download a few mb of c++ libraries, and hopefully show you a button that says "Root Me".Click that button, and if everything works, it will write the su binary to systemxbinsu. Then install the superuser app (supersu won't work with this su binary).After its done, neither my app or ministro are needed for root to keep working.If you want to use superSU instead of superuser, follow the directions as above, and then install the superSU app. Then open that app, and tell it to update the su binary. After that, superSU will work, and superuser will not.