How do I save the parameters to my Mentor MP drive?

If you are making changes in either the sub-block menus, or menu 0 of the linear menus then all parameter changes are automatically saved.   

If you are in the advanced menus then after you have made your changes, navigate to parameter 00 in any menu.  The user guides will display this as xx.00.  Press the mode button to enter edit mode, scroll up, and find the parameter value that reads SAVE.  Press the red reset button on the keypad to complete the save.