As the clocks went back this morning, rather than lie in, I thought I would treat the GTi Discover nav system to the latest May 2016 update...... I should have stayed in bed!
I have done this once before with the Nov '15 update, it was straight forward, in a retro IT way.
I downloaded the individual files from the Navigation site linked by VW.
http://www.navigation.com/is-bin/INTERSHOP.enfinity/WFS/Navteq-NavteqEurope-Site/-/-/-/View-Promo?&cwt=application/ApplicationFrame_campaign_light&Page=VW_Europe_Media_MIB1I have then used their 7 zip to extract the files into a new folder.
I have then copied that file directly to the formatted VW SD card that came with the car and worked fine with the previous data file.
Now the fun begins, when I insert the SD card into slot 2 and start the Nav, I get the message on the screen.
"Please insert a data medium with valid navigation data."
IF ANYONE ELSE FINDS THIS PROBLEM.
*RESOLVED*
I USED WINZIP RAR INSTEAD OF THE RECOMMENDED 7ZIP AND THE DATA WAS SUCCESSFULLY EXTRACTED TO THE SD CARD IMMEDIATELY.