The MK3 and MK4 Drives are exactly the same for Color and Monochrome Navis. The MK2s were/are different(MK2c and MK2m).
You can reprogram MK3 and 4 with the posted manual. I've done that lots of time.

When you install a factory-new mk4 or 3 into a monochrome-car, you must follow these steps. Otherwise it will load the colorsoftware because of the factory-configuration and it doesn't work with the monochrome-screen.

The MK4 on the picture I think that is an e65 unit, or maybe for the japanese Navi-system. That is completely different to our system.