Step 1 - setting up the USB driversBefore you try using this rooting program, you'll need to have the USB drivers installed for your phone.The easiest way to do this is to install Samsung Kies. If Kies sees your phone, you're OK for the drivers.If you don't have the drivers working, the root installer will hang at "waiting for device..."Step 2 - Enable USB DebuggingThe second thing you must do is to enable USB debugging on your phone. Go to "Settings", "More...", then "Developer Options".If "Developer Options" doesn't appear, then you'll need to enable it - go to "Settings", "More", "About Phone". Scroll down so the "Build Number" is visible, then tap on that several times until developer mode is enabled.In Developer Options, make sure "USB Debugging" is checkmarked.Step 3 - Enable USB ADB AccessMake sure that your computer is allowed to use USB debugging on your phone. To do this, unplug your phone and unlock it. Then, plug in the USB cable.If you see an "Alllow USB debugging?" window pop up, tap on the "Always allow from this computer" to check it, then tap OK.If you don't see that popup, it's OK, you should be OK to proceed.That's it for the phone. Step 4 - Unzip the saferoot.zipThen you need to unpack the attached ZIP file somewhere onto your PC.You should have the following when done: - a file called "install.bat"- a file called "install.sh"- a folder called "files"Step 5 - Root your phoneDouble click on the "install.bat" to run the root. It will root and reboot your phone. Once that's done, you're rooted!This exploit will NOT set the Knox Warranty Void flag. It will set the "Custom" flag, but that's nothing to worry about.While you're running this, you'll need to keep the phone awake and watch both the computer running the rooting script and your phone.You shouldn't unplug the phone unless you're prompted by the rooting script. Leave it connected until it's done.Rooting on Linux and MacOSThe saferoot script has a copy of adb for MacOS and for Linux included. To run this root, download and unzip the zip file. Open a shell window, use "cd" to change to the directory where you unpacked the zip, and type "sh ./install.sh". The OS will be detected automatically and the root should run basically as described above.If the embedded adb fails, you'll need to have the Android Debugging Bridge (adb) installed and configured and on your path. You can test that it's ready by opening a shell (Terminal) window and typing "adb shell". If you get a shell prompt on the phone, type "exit" and you're ready to go. NotesDon't try to download this onto your phone and run it from there. That won't work, at least for the i545 (i.e. running it from the Terminal Emulator app will fail.)Having troubles getting adb connected? There are several possible causes and solutions.There are cases where people can't get the connection working unless they toggle the USB connection type from Camera to Media and back. Perhaps that may help getting it to work. Toggling the "Enable USB Debugging" apparently helps in some cases as well.