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GARMIN GPSMAP278 Firmware Upgrades

Firmware: V3.30 - V3.20 - V3.10 - V2.90 - V2.80 - V2.70 - V2.60 - V2.50 - V2.40 - V2.30

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. Go to the main menu.
  2. Use the rocker key to highlight "Setup".
  3. Press the Menu key to access the submenu.
  4. Select "Software Version" and press the ENTER key.
  5. The current firmware version will be displayed on the screen.
  6. 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 3.20 to 3.30: (released 03/18/2009)

WARNING: If you are updating from a previous software version, this software may clear user memory. Please back up important data (routes, tracks, and waypoints) to MapSource prior to updating.
  1. Improved battery gauge accuracy.

Firmware Upgrade V3.30 (Self-extracting ZIP-file, requires a PC and a connection cable, 2.8 MB)

To table of contents


Changes made from version 3.10 to 3.20:

  1. Improved compatibility with 512 MB data card.
  2. Improved map display when both internal maps and maps on a data card are visible.
  3. Improved unit behavior when a blank data card is inserted.
  4. Improved display of battery charge level.

Firmware Upgrade V3.20 (Self-extracting ZIP-file, requires a PC and a connection cable, 2.8 MB)

To table of contents


Changes made from version 2.90 to 3.10: (released 01/15/2008)

  1. Corrected address search operation with MPC maps (MapSource Custom Maps).

Firmware Upgrade V3.10 (Self-extracting ZIP-file, requires a PC and a connection cable, 2.8 MB)

To table of contents


Changes made from version 2.80 to 2.90:

  1. Improved GPS satellite acquisition under certain conditions.

Firmware Upgrade V2.90 (Not available for download)

To table of contents


Changes made from version 2.70 to 2.80: (released 06/29/2007)

  1. Corrected external voltage alarm persistent behavior between power cycles.
  2. Corrected state and country information for city searches.

Firmware Upgrade V2.80 (Self-extracting ZIP-file, requires a PC and a connection cable, 2.7 MB)

To table of contents


Changes made from version 2.60 to 2.70: (released 03/27/2007)

  1. Improved NMEA output.
  2. Daylight saving changes for United States.
  3. Added Mexican time zones.
  4. Corrected address and postal code searches when a datacard is present.

Firmware Upgrade V2.70 (Self-extracting ZIP-file, requires a PC and a connection cable, 2.8 MB)

To table of contents


Changes made from version 2.50 to 2.60: (released 01/26/2007)

  1. Corrected 'persist' setting for external voltage alarm.
  2. Improved ability to move user waypoints while editing a route.

Firmware Upgrade V2.60 (Not available for download)

To table of contents


Changes made from version 2.40 to 2.50:

  1. Improved display of recommended route lines on marine charts.
  2. Added capability to send routes containing custom POIs to MapSource. Requires MapSource version 6.12.
  3. Improved city selection operation for European address searches.
  4. Improved operation when moving user waypoints with the map cursor.
  5. Corrected issue with changing usage mode from the Setup tab of the main menu.

Firmware Upgrade V2.50 (Not available for download)

To table of contents


Changes made from version 2.30 to 2.40:

  1. Corrected issue that could cause 'WorldMap' series maps from being displayed.
  2. Increased the number of characters allowed to display map zoom status.
  3. Corrected text translations.
  4. Clear trip data to correct issue with previously stored data.
  5. Added Czech voice support.

Firmware Upgrade V2.40 (Not available for download)

To table of contents


Changes made from version 2.10 to 2.30:

  1. Corrected issue in previous software revision that could prevent the time zone from being changed.
  2. Corrected issue that could cause the odometer field value to become inaccurate.
  3. Corrected occasional unit shutdown during powerup.
  4. Updated text translations for Italian.

Firmware Upgrade V2.30 (Not available for download)

To table of contents


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