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GARMIN GPSMAP76 Firmware Upgrades

Firmware: V4.00 - V3.90 - V3.80 - V3.70 - V3.60 - V3.50 - V3.41 - V3.30 - V3.10 - V2.09 - V2.08 - V2.07 - V2.05 - V2.04 - V2.03 - V2.02

The following lists of changes are based on information provided by GARMIN. Changes or improvements which we consider important or especially useful are shown highlighted.

To view the current firmware version, complete the following steps:

  1. Press the Menu key twice to access the main menu.
  2. Select "System Information" and press the ENTER key.
  3. The current firmware version will be displayed on the screen.
  4. Press the ENTER key to quit the screen.

Each upgrade replaces the complete firmware in the GPS, which means you need to install only the version you wish to apply. There is no need to install any previous versions.


Changes made from version 3.90 to 4.00: (released 11/29/2006)

  1. Improved WAAS search and selection process to be smarter in its handling of multiple SBAS service providers, overlapping service volumes, and exceptional conditions.

Firmware Upgrade V4.00 (Self-extracting ZIP-file, requires a PC and a connection cable, 1.7 MB)

To table of contents


Changes made from version 3.80 to 3.90: (released 02/25/2005)

  1. Fixed shutoff problem with certain European tides.

Firmware Upgrade V3.90 (Self-extracting ZIP-file, requires a PC and a connection cable, 1.7 MB)

To table of contents


Changes made from version 3.70 to 3.80: (released 10/15/2003)

  1. Corrected problem with European tides.

Firmware Upgrade V3.80 (Self-extracting ZIP-file, requires a PC and a connection cable, 931 kB)

To table of contents


Changes made from version 3.60 to 3.70: (released 09/22/2003)

  1. Improved non-volatile memory storage of WAAS/EGNOS ionospheric mask corrections.
  2. Reduced delays in acquiring a position when using differential GPS.
  3. Added Canadian tide support.

Firmware Upgrade V3.70 (Self-extracting ZIP-file, requires a PC and a connection cable, 992 kB)

To table of contents


Changes made from version 3.50 to 3.60: (released 09/05/2003)

  1. French translation update.

Firmware Upgrade V3.60 (Self-extracting ZIP-file, requires a PC and a connection cable, 988 kB)

To table of contents


Changes made from version 3.41 to 3.50: (released 07/30/2003)

  1. Added updated support for RCV_CPO data.
  2. Fixed problem with changing elevation units. Users are now able to change to meters without having to restart the unit.
  3. Improved WAAS/EGNOS satellite selection algorithm to select the satellite with the most beneficial corrections given the unit's current position. A unit will not use a WAAS/EGNOS satellite if the unit's current position is outside of a given WAAS/EGNOS satellite's service volume.
  4. Added new 'Distance and Speed' unit. The new unit is 'Nautical (nm, kt, m)'. The old 'Nautical' is now 'Nautical (nm, kt, ft)'. The new unit is the same as the old, except it shows the small measurements in meters instead of feet.
  5. New French translations.

Firmware Upgrade V3.50 (Self-extracting ZIP-file, requires a PC and a connection cable, 988 kB)

To table of contents


Changes made from version 3.30 to 3.41: (released 03/06/2003)

  1. Added tide support for European and Australian tides version 5.0.
  2. Added support for RCV_CPO data.
  3. Change to support manufacturing process. No noticeable change to user (V3.40).

Firmware Upgrade V3.41 (Self-extracting ZIP-file, requires a PC and a connection cable, 988 kB)

To table of contents


Changes made from version 3.10 to 3.30: (released 03/04/2003)

  1. Corrected problem that could prevent pages from being displayed correctly when attempting to average the location of a waypoint saved from a point of interest or when projecting new waypoints from a point of interest.
  2. Restored transmission of GSV NMEA sentences in full for every two-second update.
  3. Corrected display of available route waypoints on the Route Setup Map page.

Firmware Upgrade V3.30 (Self-extracting ZIP-file, requires a PC and a connection cable, 976 kB)

To table of contents


Changes made from version 2.09 to 3.10: (released 02/10/2003)

  1. Increased active track log to 10,000 points.
  2. Increased saved track log to 750 points.
  3. Increased user waypoints to 1,000 waypoints.
  4. Improved various translations.
  5. Added EOV Hungarian and South African grid support.
  6. Added functionality to start, stop, or resume navigation from the Route Detail page's option menu.

Important notes:

  • Reverting back to previously released versions will clear user memory.
  • Users are strongly urged to backup any user data they wish to save.
  • WARNING: If your current software version is less than 3.01 Beta, this software will clear all unit data including alamanac information. Backup all user data before upgrading.
  • After installation is complete, place unit with a clear view of the sky for 15-30 minutes to re-acquire almanac data.

Firmware Upgrade V3.10 (Self-extracting ZIP-file, requires a PC and a connection cable, 976 kB)

To table of contents


Changes made from version 2.08 to 2.09: (released 07/12/2002)

  1. Eliminated possible shutoffs when repeatedly finding Cities or Points of Interest.
  2. Eliminated possibly storing bad data when starting a Goto, which would cause the unit to shut off and would prevent the unit from turning on again.
  3. Eliminated possible lockups when deleting all user waypoints.
  4. Eliminated possible shutoffs and lockups when selecting a street for finding addresses or intersections using newer maps.
  5. Allowed entering and finding addresses with alpha-numeric street numbers when supported by the map data.
  6. Added a Setup Routes item to the Routes main menu page which allows setting the route waypoint transitions to Manual. When set to Manual, routes will transition to the next waypoint only when instructed to do so by the user.
  7. Added a Setup NMEA output item to the Interface setup page menu when the Serial Data Format is set to NMEA. This allows setting the following for the NMEA output: the precision of the minutes field for lat/lon, the waypoint identifier format, and which groups of sentences to transmit. These settings allow compatibility with a wider range of NMEA-driven products including some older marine autopilots.
  8. Added receiving water depth through DBT NMEA input sentence.
  9. Added Location (both chosen & default formats) as choices for Medium and Large configurable fields.
  10. Added geocaching user waypoint symbols.
  11. Added more marine user waypoint symbols.
  12. Added new Point of Interest types when supported by the map data.
  13. Allowed finding duplicately-named cities by name across multiple maps of the same type if supported by the map data.
  14. Used depth (if it is being received through NMEA) when marking a waypoint.
  15. Used depth (if it is being received through NMEA) and altitude when creating the MOB waypoint ("man over board").
  16. Display approaching waypoint messages longer when based on distance.
  17. Reset the Arrival alarm when the Arrival alarm distance is changed.
  18. Prevented possible corruption of time in GARMIN output format.
  19. Output correct week number in NMEA output format when operating through the end of a week.
  20. Added Croatian map datum.
  21. Changed Taiwan grid title from T67 to TM2.
  22. Removed displaying the hotel & motel reservation number when reviewing exit services.
  23. Changed threshold so that values greater than 9999 meters are displayed as kilometers. Previously this threshold was 999 meters.
  24. Improved appearance of BlueChart submerged pipes and cables.
  25. Added Hungarian language.
  26. Always display both street name and number when displaying addresses.
  27. Improved the accuracy of the estimated accuracy value.
  28. Correctly turn Anchor Drag and Off Course alarms on and off on Alarms setup page.
  29. Correctly display the Mode after restoring defaults on the General setup page.
  30. Correctly display the map page when rapidly changing pages.
  31. Allowed the backlight to be turned on while a confirmation page is being displayed.

Firmware Upgrade V2.09 (Self-extracting ZIP-file, requires a PC and a connection cable, 946 kB)

To table of contents


Changes made from version 2.07 to 2.08: (released 01/09/2002)

  1. Retain waypoint comments between power cycles.
  2. Changed the anchor drag alarm to sound every time the boat moves outside the anchor area.
  3. Changed the anchor drag alarm setting distance units from miles to feet.
  4. Display approaching waypoint messages longer when based on distance.
  5. Eliminated possible lockups when saving a track back through midnight or noon.
  6. Improved WAAS performance after long periods of shading for both WAAS and GPS satellites.
  7. Improved WAAS performance when GEO ephemeris is available but almanac has not yet been collected.

Firmware Upgrade V2.08 (Self-extracting ZIP-file, requires a PC and a connection cable, 917 kB)

To table of contents


Changes made from version 2.05 to 2.07:

  1. Eliminated lockups at certain locations.
  2. Added waypoint comments. (When new waypoints are created, the comment will initially contain the date and time the waypoint was created.)
  3. Added Project Location option for waypoints.
  4. Added Append To Route option for waypoints to allow appending of waypoints to new and existing routes.
  5. Added Toggling between displaying chosen & default location formats on the GPS info page when a cursor key is pressed.
  6. Added new Swedish RT 90 location format.
  7. Added control of marine services to the Marine tab of the map setup.
  8. Increased the breadth of waypoint symbols that can be received through the serial port.
  9. Improved responsiveness of positioning in shaded conditions.
  10. Added display of the north reference source to bearing fields.
  11. Properly show times for tide stations with UTC offsets greater than +/- 9 hours.
  12. Always show street number and street name in correct order based on map data.
  13. Allowed for all 4 digits of mils to be shown on the map feature review pages.
  14. Re-sort waypoint symbol selection list after changing the language.
  15. Changed confirmation box buttons on proximity page from OK & Cancel to Yes & No.
  16. Increased the number of copyrights that can be displayed from 4 to 5.
  17. Correctly get all copyrights strings from map data.
  18. Made the size of the degree symbol consistent between degree symbols with north reference indication (e.g. deg true, deg mag) and those without.
  19. Changed 'Map Location' text to 'Map Pointer'.
  20. Map datums automatically associated with location formats can no longer be changed.
  21. Changed Swedish and RT 90 location formats to have the northing on top and easting below and to use 'X' and 'Y' to indicate northing and easting instead of 'N' and 'O'.
  22. Improved the appearance of the pointer tail.

Firmware Upgrade V2.07 (Self-extracting ZIP-file, requires a PC and a connection cable, 917 kB)

To table of contents


Changes made from version 2.04 to 2.05:

  1. Eliminated possible lockups when determining next street.
  2. Eliminated possible lockups when using WAAS.
  3. Eliminated possible lockups when the unit detects low batteries and attempts to shut off.
  4. Eliminated possible shutoffs when computing moon rise and set times for extreme latitudes.
  5. Eliminated repeated resetting of reference when measuring distance after the menu was exited with the ESC key.
  6. Eliminated occasional blanks at the end of lists when finding Points of Interest by name.
  7. Transfer more points to saved tracks when saving short track logs.
  8. Added support for displaying BlueChart data on the map.
  9. Changed display of distances to have 2 digits to the right of the decimal point.
  10. Added support to display directions in mils.
  11. Changed anchor drag alarm tone to sound until the message is cleared by the user.
  12. Always display airports when available in map data.
  13. Correctly indicate the services present at Fishing Hotspot facilities.
  14. Added support for Addresses and intersections to have more than one city associated with them when finding.
  15. Added support for diacritic characters in map data.
  16. Added the ability to find streets by each word in the name when supported by the map data.
  17. Consistently show either exit or cross road data regardless of the direction of travel on a road.
  18. Display "inaccurate result" message if there is an error calculating a tide.
  19. Completely removed transmission of Sonar sentence from NMEA output.
  20. Used user-entered magnetic variation if north reference is set to user when transmitting RMC and BOD NMEA sentences.
  21. Added indication of datum used by transmitting PGRMM NMEA sentence.
  22. Smoothed positioning when operating in areas of heavy shading when user has not entered an altitude.
  23. Changed name of existing Hu-Tzu-Shan datum to Taiwan.
  24. Added a new datum named Hu-Tzu-Shan which conforms to the published Taiwan map datum definition.
  25. Improved the initial accuracy estimate.

Firmware Upgrade V2.05 (Self-extracting ZIP-file, requires a PC and a connection cable, 911 kB)

To table of contents


Changes made from version 2.03 to 2.04:

  1. Correctly determine the date the first time satellites are acquired after the unit has been stored without batteries.
  2. Improved the name displayed for the preloaded Marine POI data on the Select Map menu.

Firmware Upgrade V2.04 (Self-extracting ZIP-file, requires a PC and a connection cable, 879 kB)

To table of contents


Changes made from version 2.02 to 2.03:

  1. Correctly determined when and where the map should be drawn.
  2. Ensured the maps are drawn after transferring maps from MapSource to the unit, and when displaying the map page the first time after turning the unit on.
  3. Only displayed maps that were not completely covered by other maps.
  4. If only one map contained the points being searched for, used it even if not selected by the user.
  5. Improved a few Swedish translations.

Firmware Upgrade V2.03 (Self-extracting ZIP-file, requires a PC and a connection cable, 878 kB)

To table of contents


Changes made from version 2.01 to 2.02:

  1. Prevented scrambled screens when pressing the NAV key twice.
  2. Prevented default Loran TD setup from being invalid.
  3. Allowed panning on map in all 8 directions on all units.
  4. Reported actual available size for maps to MapSource.
  5. Displayed tide station times using the daylight saving time setting.
  6. Corrected display of tides for stations that have a tide height bias.
  7. Stored saved track point locations so that they don't move when being transferred back and forth between the unit and a PC.
  8. Increased elevation display from 4 to 5 digits and made it always display feet.
  9. Remembered highlight position in list when reviewing waypoints on the route page.
  10. Computed the area enclosed by a saved track.
  11. Allowed finding Manmade Places, Water Features, and Land Features Points of Interest when available in map data.
  12. Controlled bearing line separately from other navigation lines in map setup.
  13. Displayed GPS status on Pointer page and Highway page when not navigating.
  14. Displayed services available at Fishing Hot Spots facilities.
  15. Displayed TracBack points as "BEGIN, TURN 1, TURN 2...END" instead of "TURN, TURN...".
  16. Reduced occurrences and improved handling of "None Found" messages when finding points.
  17. Stored map setup changes when exiting map setup instead of when turning unit off.
  18. Added highlight timeout when panning on maps.
  19. Stored Normal or Battery Saver mode when selected after Simulator mode.
  20. Stored all the track log points specified when saving a track.
  21. Removed transmitting Sonar information on NMEA output.

Firmware Upgrade V2.02 (Self-extracting ZIP-file, requires a PC and a connection cable, 878 kB)

To table of contents


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