To retrieve the factory programs after they have been deleted, please check through the following steps...
1. If you haven't already, download the Editor from the inMusic Software Center. To do so, click on the 'My Hardware' tab, then expand the MPK Mini MK3's drop down menu by clicking on its icon which is shown below.
2. Connect the MPK Mini MK3 to your computer, download the Editor and then open it.
3. Select File > Open Program to reveal a window containing all factory programs.
4. Double click on your chosen program to open it, then click File > Send Program and choose an empty slot to send it to your MPK Mini MK3.
5. Enjoy using your MPK Mini MK3 with its restored factory programs.
The process above is the same for both Windows and Mac OS computers.