We are in the process of buying a 2017 Tiguan 2.0 TDI Comfortline and I need some advice on the infotainment.
The car is listed with the 6.5" Composite media package, although after viewing the car I've noticed that it has an 8" display (without navigation).
The screen has a nasty mark on it with a couple of dead pixels and roughly a 2cm scratch. Not end of the world but I would like to know what my options are to replace it.
Here is the current setup:

I can get a refurbished 8" unit from Vagtec, but it has buttons for navigation (which this car definitely does not have). Do I simply need to connect a GPS antenna or is there more to it to convert to the "Discovery package"?
Here is a photo of the unit:

Alternative number 2 is to get the "facelift" of the MIB II infotainment. I can get a new OEM unit, but I am not sure if it is plug and play (apart from changing the trim plate to accommodate the new positions of the two knobs). Will it require a software update to be compatible or is the software loaded in the unit itself?
Here is a photo of the new version:

I would appreciate any advice.
Regards