(Step 4-4) Tap [OK] to make sure the icon is shaped as and tap on at the upper right corner twice to exit the "Add/Remove Software" application. The installation is completed. Make sure that the application icon is shown on the Home screen. The original (*.ipk) file will remain in the user area even after the new software is added.  You can delete this ipk file to save memory space. The installed software will work even if the ipk file is deleted.