_**IFD5XX/4XX AT 10.2.X or Higher**_ For IFD5XX/4XX currently at S/W Version 10.2.X or higher you can obtain the GPS Rollover Software at: **https://dealers.avidyne.com/files/downloads/500-00274-000_GPS_PATCH.dsf ** Additionally, you can obtain the Service Bulletin for this upgrade at: **https://dealers.avidyne.co...