GARMIN GPS12XL/48/80 Software Upgrade Information
Software Version 4.60

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WARNINGS:
    If this software is uploaded to a GPS unit other than the product for
    which it is designed, you will not be able to operate that unit.

    If the upload software fails, verify that you have good batteries installed
    and try again.  If repeated upload attempts fail, you may need to return
    the unit to GARMIN for service.

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Instructions for uploading the new software to your GPS using Microsoft
Windows 95/98/NT:

1.  Download the appropriate self-extracting archive file for your GPS onto
    your hard drive.

2.  Unzip the files in the archive by running the downloaded executable file.

3.  Connect your GPS to a free serial port (Com 1, 2, 3, or 4) on your PC with
    a PC interface cable.

4.  Turn on your GPS and ensure the Serial Data Format is set to "GARMIN". You
    can find this setting in Setup Menu -> Interface.

5.  Change to the directory in which you unzipped the files, (i.e., C:\GARMIN),
    and run the update program, updater.exe.  Select the appropriate serial
    port and click "OK" to begin the software upload.
    
    During the upload, the GPS's display will indicate "UPLOAD IN PROGRESS"
    The upload process should take 3-10 minutes to complete. When the upload
    is completed, the GPS will reset itself and turn on normally.

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Changes Made from Versions 4.58 to 4.60:

1.  Updated French translations.

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Changes Made from Versions 4.57 to 4.58:

1.  When receiving a waypoint from NMEA input initialize the waypoint symbol 
    to a simple dot.

2.  Update magnetic variation tables based on the new IGRF 2000 model.

3.  Corrected Loran TD position format secondary station "W - Whisky" for chain 
    number GRI-9960.