real challenge Hyundai gps change map

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Hi all
1 st thanks for the great job done around here

2 i have a Hyundai with a gps radio coming from USA running win ce6 model AVN-600YFJL.
i use that car in EU and would like to change the Navteq map inside
sadly both Hyundai and Navteq want to help me !
If you change the radio you loose some info . . .
I open the radio, trying to find something like an usb connector like in EU Hyundai radio, no luck . ..
but i see inside a Samsung kmcmg0000m-b998 wich is a 8 gb memory
and i couldn't find a datasheet for it . . .
is it possible to read it ?
i m not afraid by soldering inside the radio some cable if needed
to reach the goal.
There is also a dev menu inside the radio . . . there are different way to kill a fly ...
Of course i am ready to test all the idea , the radio is on my desk powered by a lab power supply ready to send pictures and all info needed
thanks regards fred