SD compatible only with RNS310 FX  not for RNS315

SD also compatible with Seat and Volkswagen Amundsen

How to Check what unit is fitted in the car:

Press SETUP and hold about 10 sec. On-screen choice "Versions"

RNS 310 has only 3 information lines:
Part number
Software versions
Hardware versions

RNS315 have 5 information lines:
Part number
Software versions
System hardware versions
Navigation data
Part number
Navigation data: version

Compatible  SKODA RNS310 

SD card Coverage

West Europe:
Andorra, Belgium, Denmark, Germany, Finland, France, Gibraltar,Greece, Ireland, Iceland, Italy, Liechtenstein, Luxembourg, Monaco, Netherlands, Norway, Austria, Poland, Portugal, San Marino, Sweden, Switzerland, Slovakia, Slovenia, Spain, Czech Republic, Hungary, Vatican City, United Kingdom, Partial covering: Slovakia, Slovenia.

East Europe:
Belarus, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic, Estonia, Germany, Greece, Hungary, Kosovo, Latvia, Liechtenstein, Lithuania, Moldova, Poland, Romania, Russia, Slovakia, Slovenia, Switzerland, Turkey, Ukraine, Major Roads: Albania, Bosnia and Herzegovina, Macedonia, Montenegro, Serbia