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.com/files/downloads/601-00182-048.pdf
IFD5XX/4XX AT 10.1.X
If your IFD is currently at a 10.1.X or less, please contact your nearest Avidyne dealership to update your IFD5XX/4XX to 10.2.2.0A by proceeding to the Avidyne Dealer Service Center Website and downloading the latest IFD 10.2.X Load Utilities.
https://dealers.avidyne.com/downloads/ifd540-release-10-1.asp
IFD5XX/4XX AT 10.0.X
In the rare case you encounter an IFD5XX/4XX at a 10.0.X Software, contact Technical Support to go over the upgrade options.
For your information, there is also a Service Information Letter that explains the GPS Rollover event and what it's effects are on the IFD.