Having trouble in that it seems that the new version is not being found on the USB stick.
I assumed that you unpacked the download on your Mac/PC. After doing that I see a folder named "Road_Map_EUROPE_EVO_2017-3". Did you just leave everything in this folder and copy the complete folder (rather than its contents) to the USB.
For info the current Version information shows :
Road Map EUROPE EVO 2016-2
NBTevo_L17163l
then:
Automatic map update:
GB, IE 2017-3
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