That's for the wrong generation of navigation system. You've downloaded the maps for the newer generation MIB system which is in MQB cars like the Golf7, Octavia 3 etc...
What you have is known as the RNS510.
The latest map version is v9, but it is not available at dealers.
It can be bought from some online retailers but is still quite expensive.
v8 can be bought for around $50. This is 2014 map data.
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