AUDI Sat Nav updates?

[vhatch]

Hi all,

I have a 2015 AUDI A3 saloon fitted with an AUDI Sat Nav unit and wondered how the Sat Nav updates itself with road changes as it seems out of date with some of its directions/instructions.

In contrast, I have a separate portable TOMTOM Sat Nav which I connect to the home wi-fi and it automatically updates itself with road changes and speed camera locations...everything is up to date and relevant. 

Any advice/info greatly received. 

Many Thanks

Vince H