You will have at least 5 digit postcodes.
You may already have firmware the is high enough to get 7 digit postcodes.
You can get 7 digit postcodes with version 2.80 or higher, you may also need at least 2014 maps.
To enter a postcode select nav, then destination, make sure your country matches where your postcode destination is, ie Swansea the country is Wales.
In the next field where you can also put a town/city enter your postcode, you can if you want put in the house number but not necessary.
Then proceed to the next screens.
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