I have a Shinco SLIM-4380BEE that comes with MapKing R12 installed in it. However, with this version, i cannot do searches using postal code. I was told that MapKing Landmark is capable of it and wishes to update.

How do I do so? I have downloaded MapKing Landmark; should i delete whatever that is on the SD card provided and replace with MapKing Landmark?

I hope someone can help me, thank you!