ui_print("Superuser 3.3 for Android 2.0-Android 4.2+");
ui_print("Mounting system...");
run_program("/sbin/busybox", "mount", "/system");
ui_print("Deleting old Superuser & SuperSU files...");
delete("/system/bin/su","/system/xbin/su","/system/app/Superuser.apk","/system/app/SuperSU.apk");
ui_print("Installing new Superuser...");
package_extract_dir("system", "/system");
ui_print("Setting permissions...");
set_perm(0, 0, 06755, "/system/xbin/su");
ui_print("Symlinking...");
symlink("/system/xbin/su", "/system/bin/su");
ui_print("Unmounting system...");
run_program("/sbin/busybox", "umount", "/system");
ui_print("Installation complete!");
