[HELP] GPS Navigation Conversion [NZ]

Hey Folks.

So here's my problem, I recently purchased a Mercedez E300 2014 (Sedan) , shipped from England and the navigation system (GPS) is what i believe locked to England. I would like to renew the software into a New Zealand Navigation System, I also heard something about setting up a code for the GPS system.

Do I need to wipe the current software and install fresh ones that have NZ maps?

I'm hoping someone could give me a hand with this, I'm quite knowledgeable with computer related problems however I've never encountered anything related to Car GPS Systems.

Perhaps link me to a tutorial etc.

Cheers.

Hello, I'm sure some one out there could help out here!

HI, Is this car W205 or W204 chassis? feel free to contact me www.eurosurgeon.co.nz, import conversion to NZ is my specialty

Hi
looking for 2015 c 180 navigation maps for Jordan or middle east
the car arrived with SD card from Germany with Europe map (Garmin Map Pilot 2014)
thanks
Raed