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: Additionally, you can obtain the Service Bulletin for this upgrade at: IFD5XX/4XX AT 10.1.X If your IFD is currently at a 10.1.X or less, please contact your nearest Avidyne dea…