30 GPSMAP 640 Owner’s Manual
Marine Mode: Managing User Data
Restoring Backup Marine Data to your Device
1. Copy the <lename>.ADM le from your PC to an SD card in a
folder named Garmin\UserData.
2. Insert the SD card into your device.
3. From the Home screen on your device, touch Information >
User Data > Data Transfer > Replace From Card.
4. Touch the name of the data le you want to restore.
Copying or Merging MapSource
®
Marine
Data to the GPSMAP 640
1. Insert an SD card into your GPSMAP 640 device. The unit
places a le on the card that provides information to MapSource
to format data. This only needs to be done the rst time you
copy or merge MapSource data to your device from a specic
SD card.
2. Check your MapSource version on your PC by clicking Help >
About MapSource. If the version is older than 6.12.2, update to
the most current version by clicking Help > Check for Software
Updates or check the Garmin Web site at www.garmin.com.
3. Insert the SD card into an SD card reader that is attached to the
PC.
4. From MapSource, click on Transfer > Send to Device.
5. From the Send to Device window, select the drive for the
SD card reader, and the types of data you want to copy to your
device.
6. Click Send. MapSource transfers a le named
USERDATA.adm to the SD card.
7. Insert the SD card into your device.
8. From the Home screen on your device, touch Information >
User Data > Data Transfer.
9. Touch Replace From Card or Merge From Card to copy or
merge the data into your device.
