bnam

I'm looking to upgrade my 08 w211 to ntg 2.5. For the Nav to work in India (where the car is), I need an India NAV (code 825L). I'm having difficulty finding the right part number for this, but I've seen numbers for dvds from the later w212s. Will a later DVD (ntg 4.5 for ex) work in the ntg 2.5?

Anyone from down under or NZ on the board here? The DVDs seem to bundle Australia, NZ and India in the ones I saw. Anyone with one that works in an NTG 2.5?

Thanks,
Byas