If your map uses post codes (UK, Netherlands or Singapore), you should have a folder in the root of your device called 'zip' which will contain the post code files. You can create the folder yourself if it is missing.

Download the relevant files for either or all of those 3 maps from the links below, extract the archive(s) into the zip folder overwriting the old ones if necessary.

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Not sure the links are working, when you click on them the page just flickers and that's it.

Cheers.

I've just edited the links so try it again...

That's fixed it .

Thank you.