2008 W211 Satnav update

[rosie5golf]

Hi,
I've just had to replace my head unit in my 2008 e320 W211 and found that the satnav is well out of date to my original head unit.
I understand that I need an earlier update before I can download the last update.
Any suggestions please where I can get the earlier update, I've tried Evil Bay but without success. I hope this post makes sense.

 

[markjay]

What type is it?

COMAND NTG2 will have the maps on DVD.

COMAND NTG2.4 will have the maps on an internal HDD (copied to the HDD from DVDs)

And I don't think that the W211 ever had NTG4.