WARNING: If this software is uploaded to a device other than that for which it is designed, you will not be able to operate that device.
If attempts to upload software fail, you may need to return the device to Garmin® for service.
Change History
Changes made from version 4.40 to 4.50:
Fixed problem with binary data output.
Changes made from version 4.30 to 4.40:
Fixed corner case GPS week number rollover for devices using older hardware.
Changes made from version 4.20 to 4.30:
Fixed satellite tracking bug affecting GPS sensors used before April 6, 2019.
Changes made from version 4.00 to 4.20:
Fixed GPS week number rollover for devices using older hardware.
Improved PPS (pulse per second) reliability.
Changes made from version 3.90 to 4.00:
Improved time keeping.
Changes made from version 3.80 to 3.90:
Better handling for leap second data storage especially over long periods of non-use.
Changes made from version 3.70 to 3.80:
Fix the timing of the output PGRMT Sentence.
Fix to retain position averaging state between power cycles.
Update the magnetic variation table.
Changes made from version 3.60 to 3.70:
Improved NMEA output timing stability.
Added support to enable/disable velocity threshold filtering.
Modified the PGRMID sentence format for maintaining consistency with the other NMEA sentences.
Changes made from version 3.50 to 3.60:
Fixed factory firmware flash capabilities.
Changes made from version 3.30 to 3.50:
Added support to enable/disable internal position averaging.
Changes made from version 3.20 to 3.30:
Add PGRMID sentence to allow user programmable device ID.
Reversed sign of vertical velocity to be in ENU coordinates.
Fixed problem with almanac data not outputting.
Changes made from version 3.10 to 3.20:
Modified proprietary binary output data format to fix incorrect date/time calculation on some Garmin marine products.
Changes made from version 3.00 to 3.10:
Improved robustness of internal error handling.
Changes made from version 2.90 to 3.00:
Fixed NMEA mode echo when the reset command is sent via PGRMI.
Changes made from version 2.80 to 2.90:
Improved binary phase output and mode switching reliability.
Changes made from version 2.70 to 2.80:
Fixed problem of unit not working above 60,000 feet.
Allow PPS to coast when fix is lost.
Changes made from version 2.60 to 2.70:
Added map unlock support.
Fixed time field of PGRMI echo sentence to be UTC time.
GPS velocity performance improvements.
Changes made from version 2.50 to 2.60:
Fixed field 7 of PGRMI input to properly reset unit.
Changes made from version 2.40 to 2.50:
This version will clear all user settings.
Fixed problem with SBAS tracking.
Changed default DGPS mode to 'Automatic'.
Fixed formatting of GPVTG sentence.
Changed default RTCM baud rate to 4800.
Fixed automatic velocity filtering.
Changes made from version 2.30 to 2.40:
Fixed 'number of satellites in use' field of GPGGA sentence.
System requirements
IBM-compatible PC running Windows 2000 or later operating system and an available Com 1, 2, 3, or 4 port.
PC Interface Cable for your GPS unit. The PC Interface Cable may be purchased through your local Garmin distributor or ordered direct from our Online Store.