I did deep inspection of original SD card but I did not find any hidden partition. I created duplicate of original card and by me the navi unit is paired with sd card throught the CID number of SD card only. So to create working copy of original sd card isn't problem (for unique car of course).
But the navi system must be to abble to use some new sd card too. I would like to undestandt this procedure how the new (I mean original card I will buy from seat or VW dealer) sd card will be paired with navi system. There should be something else (probably ecrypted files?). This is reasson why I would like to know if there is any official way how to update system by yourself? This procedure understandig can help us to find out way how to by pass navi producer limitation.
But the navi system must be to abble to use some new sd card too. I would like to undestandt this procedure how the new (I mean original card I will buy from seat or VW dealer) sd card will be paired with navi system. There should be something else (probably ecrypted files?). This is reasson why I would like to know if there is any official way how to update system by yourself? This procedure understandig can help us to find out way how to by pass navi producer limitation.