Click each individual product to see the detailed software change history for that product. The download file also contains a change history file for each product in the update.
An SD card with 300MB of free space is needed for this update.
Please back up your user data before applying the update.
Changes made from version 2010.1130 to 2010.1227 :
GPSMAP 421/431/441/451: 3.50
GPSMAP 521/531/541/551/526/536/546/556: 3.50
Changes made from version 2010.1112 to 2010.1130:
GMR 404/406: 2.90
GMR 18/24: 3.20
GMR 604/606/1204/1206: 3.10
Changes made from version 2010.1109 to 2010.1112:
GMR 404/406: 2.80
GMR 604/606/1204/1206: 2.90
Changes made from version 2010.1026 to 2010.1109 :
AIS600: 2.20
Changes made from version 2010.1022 to 2010.1026:
GSD22: 3.20
Changes made from version 2010.0916 to 2010.1022:
GPSMap 720/740/750: 3.00
Changes made from version 2010.0825 to 2010.0916:
GXM 51: 2.30
GMR 404/406: 2.70
GMR 604/606/1204/1206: 2.80
Changes made from version 2010.0818 to 2010.0825:
GPSMAP 421/431/441/451: 3.40
GPSMAP 521/531/541/551/526/536/546/556: 3.40
GHC 10: 2.80
GMR 404/406: 2.60
GMR 604/606/1204/1206: 2.70
Changes made from version 2010.0714 to 2010.0818:
GHP 10: 3.10
Changes made from version 2010.0709 to 2010.0714:
GMI10: 3.40
Changes made from version 2010.0701 to 2010.0709:
GPSMAP 421/431/441/451: 3.30
GPSMAP 521/531/541/551/526/536/546/556: 3.30
GPSMAP 720/740/750: 2.50
Changes made from version 2010.0623 to 2010.0701:
GMR 604/606/1204/1206: 2.60
Changes made from version 2010.0622 to 2010.0623:
GMI10: 3.30
GMR 604/606/1204/1206: 2.50
Changes made from version 2010.0602 to 2010.0622 :
GHP 10: 2.90
Changes made from version 2010.0511 to 2010.0602:
GPSMAP 421/431/441/451: 3.20
GPSMAP 521/531/541/551/526/536/546/556: 3.20
Changes made from version 2010.0506 to 2010.0511:
GMR 604/606/1204/1206: 2.40
Changes made from version 2010.0419 to 2010.0506:
GPSMAP 420/430/440/450: 5.50
GPSMAP 520/530/540/550/525/535/545/555: 5.50
GPSMAP 421/431/441/451: 3.10
GPSMAP 521/531/541/551/526/536/546/556: 3.10
GPSMAP 720/740/750: 2.40
Changes made from version 2010.0325 to 2010.0419:
GPSMAP720/720s: 2.30
GPSMAP740/740s: 2.30
GPSMAP750/750s: 2.30
Changes made from version 2010.0301 to 2010.0325:
GMI 10: 3.20
AIS 600: 2.10
Installation Instructions
Click on 'Download' and choose to save the file to your computer.
Choose a location where you can easily find the file, such as the 'My Documents' folder or 'C:\'.
Once the download is complete, go to the location where you saved the file.
Double-click on the downloaded file. This will automatically extract the files to C:\Garmin and run a program to transfer the software update to an SD card.
Power on the device and make sure all other connected devices are powered on as well.
Insert the card into the card slot of your primary device. Select 'Update Software' in the window that automatically displays. If you do not have a primary device with a card slot, please see your dealer.
After the update completes, the chartplotter containing the SD card and all NMEA 2000 sensors will have the latest software.
Note: If you have additional chartplotters connected to NMEA 2000, you will have to independently update each chartplotter. After the update completes, insert the update card into each NMEA 2000 chartplotter.
system requirements
IBM-compatible PC running Windows XP or later operating system and an available SD card reader.