24 GPS Navigation System Instruction ManualAppendixThis appendix provides additional information about your navigation system, such as how to update thesoftware and map data.Updating the SoftwareTo update the navigation system software, youmust have a Secure Digital (SD™) card, an SD cardreader, and an Internet connection.⁄• The unit may restart when you insert an SD card.1 Go to www.garmin.com/Kenwood. SelectSoftware Updates > Download.2 Read and accept the terms of the SoftwareLicense Agreement.3 Follow the instructions on the Web site tocomplete the installation of the updatesoftware.Updating the Map DataThe navigation system will provide periodicnotification at startup when the preloaded mapsare considered out of date. You can purchase anSD card of updated map data from Garmin or askyour Kenwood dealer or Kenwood service centerfor details.1 Go to www.garmin.com/Kenwood. SelectOrder Map Updates, and follow the Website checkout procedure.2 After you receive your new map data SDcard, insert the card into your unit to usethe maps. The navigation system willautomatically recognize and use the mapson the SD card.⁄• The unit may restart when you insert an SD card.• The DNX5260BT and DNX520VBT use a microSD card.