private boolean setLcdDensity(int newDensity) {
   Helpers.getMount("rw");
   if (!(new CMDProcessor()
       .su
       .runWaitFor(
           "busybox sed -i 's|ro.sf.lcd_density=.*|"
               + "ro.sf.lcd_density"
               + "="
               + newDensity
               + "|' "
               + "/system/build.prop")
       .success())) {
     showRootDeniedInfoDialog();
     return false;
   }
   Helpers.getMount("ro");
   return true;
 }