NTG 6 - w177, w247, w118, w167 (prefacelift), w253 (2020+), w213 (facelift)
These are the China map versions this Mercedes head unit accepts. The activation code — the map PIN — is tied to your VIN, this region and one version: it does not work on another car or another version. These are map updates. A region change requires a separate process with a diagnostic device, and it is not a service we currently offer.