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Updates & Downloads


Update Unit Software with Garmin Express

Use Garmin Express to keep your device software up to date.

Additional Software

  • USB Drivers, Ver. 2.3.1, as of May 11, 2012, Download
  • xImage, Ver. 2.3, as of Mar 23, 2005, Download

Voice Guidance Languages

  • Voice, GPSMAP 276C/278/296/378/478, Ver. 2.20, as of Oct 30, 2006, Download

Unit Software

  • GPSMAP 276C, Ver. 5.70, as of May 13, 2013, Download