I am also looking for a database update for my Airmap 100. Does anyone have a more recent JEPPDATA.LOW file. Mine is dated 1999. I have the ability to make a working copy of your disk for you or for me.

If your computer has a floppy drive, you can format a blank floppy disk to 1.8MB using FdFormat.exe or fdFormat 1.8 or similar programs: ftp://ftp.simtel.net/pub/simtelnet/m...il/fdfrm18.zip

You can create a virtual floppy drive with a capacity of 2.88MB using a program called "VFD Control Panel". It can be download from http://freehacking.org/toolz/geektoo...d21-080206.zip or http://chitchat.at.infoseek.co.jp/vmware/vfd.htmlelse or else search for vfd21-080206.zip. VFD Control Panel will create a file representing a virtual floppy disk to use with the virtual floppy drive.

The copy protection of the Lowrance program checks the A drive Volume Serial Number to make sure that the original floppy disk is being used and not a copy. Regardless of whether you use a virtual floppy disk formatted to 2.88MB or an actual floppy drive with a disk formatted to 1.8MB, it is necessary to change the floppy disk serial number to match the serial number of the original Lowrance floppy disk that you own. Do that from the command prompt as shown below.

Change Floppy Serial Numbers
Use DEBUG to change data on the disk. Make sure that you type the spaces between the digits as shown below.

This example shows how to set the serial number for the disk in the A: drive to any value. Notice the numbers you enter (2F 01 99 10) are mirrored from the serial number you'll get. This is just an example. You must use the serial number on your original Lowrance floppy disk.
C:\debug
-L 0 0 0 1
-E 26 29 2F 01 99 10
-W 0 0 0 1
-Q
C:\DIR A:
Volume in drive A has no label
Volume Serial Number is 1099-012F
Directory of A:\