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Firmware: V9.90 - V9.60 - V7.60 - V7.20 - V6.00 - V5.00 - V4.80 - V4.20 - V4.10 - V3.40 - V3.10 - V3.00 - V2.80 - V2.50

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. Turn on the GPS.
  2. Press the MENU key twice.
  3. "Setup" is now highlighted, press the ENTER key.
  4. "System" is now highlighted, press "up" and "right". "About" should now be highlighted - if not, navigate through the Setup until About is highlighted.
  5. Press the ENTER key.
  6. The system will display the firmware version at the first line ("Software Version") and the unit ID on the second line, followed by various other information.
  7. Press the QUIT key to return to the previous page.

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 9.60 to 9.90:

  1. Fixed issue with main menu as base page.
  2. Fix shutdown when downloading BirdsEye imagery when SD Card is inserted.
  3. Improved Find key to search near map cursor position when appropriate.
  4. Fixed possible issues with expedition mode.
  5. Fixed possible issues with Search Near option.
  6. Fixed possible issue with Cancel button when saving a course.
  7. Fixed incorrect option menu items when reviewing a course.
  8. Fixed incorrect option menu items when reviewing the current recording.
  9. Fixed possible issue when changing long course names.
  10. Fixed incorrect English text when deleting a profile.
  11. Fixed possible issue where course review page could show stale data.
  12. Fixed routing prompt appearing twice when adding a via point.
  13. Fixed possible issues with menus in Connect IQ applications.
  14. Fixed possible unexpected behavior when saving or clearing an activity.
  15. Fixed adding via points to on road routes to a single point.
  16. Fixed possible shutdown when downloading Birdseye Direct images.
  17. Fixed missing lap data in course files generated on the device.
  18. Fixed incorrect tone for on and off course alerts.
  19. Fixed issue with on and off course alerts appearing when they should not.
  20. Fixed possible issue syncing courses with Explore mobile.
  21. Fixed issues searching for address numbers with more than 6 characters.

Firmware Upgrade V9.90 (Connect your device with your Wi-Fi or use GARMIN Express or Web-Updater to install the latest firmware)

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Changes made from version 7.60 to 9.60:

  1. Added support for creating courses. Courses can be navigated point to point like a track, or using map data like a route.
  2. Added support for syncing courses with Garmin Explore. Requires updated Garmin Explore app.
  3. Added ability to convert routes and tracks to courses.
  4. Added ability to pair to Garmin Explore without first pairing to Garmin Connect Mobile. Requires updated Garmin Explore app.
  5. Added option to search for POIs near a selected city.
  6. Added on course and off course alerts to track navigation.
  7. Added support for Connect IQ 3.1.
  8. Improved status bar to show paired sensors instead of only enabled sensors.
  9. Improved Bluetooth device names in sensor setup.
  10. Fixed possible issues with live geocache lists.
  11. Fixed possible issues returning to the adventure review map from another page.
  12. Fixed time data when copying tracks in reverse.
  13. Fixed issue where route list would not update after route was deleted.
  14. Fixed issue with keyboard language not persisting through power cycles.
  15. Fixed an issue deleting adventures that contain routes.
  16. Fixed possible issue with elapsed time when recording is paused.
  17. Fixed possible shutdown selecting Current Activity from the Recorded Activities app.
  18. Fixed issue where messages would appear during power-down.
  19. Fixed pressure labels for hectopascals.
  20. Fixed possible issue with missing track stats in GPX files.
  21. Fixed issue selecting the first point on the active route page.
  22. Fixed possible shutdown on keyboard page.
  23. Fixed display issue on photo viewer page.
  24. Fixed recording with expedition mode when auto-start is off.
  25. Fixed issue where archived tracks could not be deleted.
  26. Fixed issue with LiveTrack data not being sent correctly.
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Changes made from version 7.20 to 7.60:

  1. Fixed possible issues with Explore sync.
  2. Fixed possible issue with incorrect track distances when using expedition mode.
  3. Fixed issue where the text and keyboard languages could get out of sync.
  4. Fixed possible invalid track GPX files after changing color.
  5. Fixed possible issue with inReach remote message notifications.
  6. Fixed possible missing band labels on satellite page.
  7. Fixed Track color issue.
  8. Fixed possible issue when viewing the Current Activity.
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Changes made from version 6.00 to 7.20:

  1. Fixed possible shutdown when sending a Quick Text from inReach Remote.
  2. Fixed possible issues with items missing during Explore Sync.
  3. Fixed an issue where certain submenus could be draw off screen.
  4. Fixed issue setting custom waypoint offsets using filename.
  5. Fixed possible issues that caused the main menu to draw over the current page.
  6. Fixed possible shutdown related to BirdsEye direct downloads.
  7. Fixed possible issue getting stuck on a page after power-up.
  8. Fixed possible issues with postal code searches.
  9. Fixed issue where proximity alerts would only alert once.
  10. Fixed missing alerts from points loaded using POI loader tool.
  11. Fixed adding hidden SSID networks.
  12. Fixed possible issues with time restricted speed limits.
  13. Fixed navigation to a geocache to always continue until ended by user.
  14. Fixed geocache file list to wrap.
  15. Fixed some issues with geocache photos.
  16. Fixed issue where certain pages could incorrectly appear to have tabs.
  17. Fixed issue where fit activities could be missing start time data.
  18. Fixed issue where bearing line would not appear on map in CDI compass mode.
  19. Improved recent finds list to include navigation started from the map.
  20. Improved functionality of navigation features with Explore.
  21. Improved round trip routing setup experience.

Firmware Upgrade V7.20

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Changes made from version 5.00 to 6.00:

  1. Added support for starting navigation form the Explore App.
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Changes made from version 4.80 to 5.00:

  1. Fixed issue causing some software updates to fail.
  2. Improved the process of deleting .ggz files.
  3. Fixed issue with geocache proximity alarm slowing down start up times.
  4. Fixed possible shutdown on photo viewer with lots of photos.
  5. Fixed potential flashing of main menu on top of different apps.
  6. Fixed issue that could occur when clearing geocaching live data while navigating to a geocache.
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Changes made from version 4.20 to 4.80:

  1. Added support for the additional waypoints part of a geocache to be downloaded via geocaching live.
  2. Added geocache proximity alerts.
  3. Added Auto Save to recording setup, replacing Auto Archive.
  4. Added Garmin Explore collections manager.
  5. Improved text entry for inReach remote.
  6. Improved BirdsEye Direct download speeds.
  7. Improved use of Menu > Menu so that page sequence positioning is not lost.
  8. Improved Chirp icon to indicate when Chirp is active.
  9. Improved behavior of navigation of the active track after a power cycle.
  10. Fixed possible issues sending messages with inReach Remote.
  11. Fixed possible shutdowns related to BirdsEye Direct.
  12. Fixed possible issues with Chirp pages.
  13. Fixed possible issues with geocache filters.
  14. Fixed possible display issue on the review page for right to left languages.
  15. Fixed incorrect location data on geocache logs.
  16. Fixed possible issue where calendar would select the wrong day.
  17. Fixed possible issue reading data from microSD cards.
  18. Connect IQ security improvements.
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Changes made from version 4.10 to 4.20:

  1. CIQ Security Update.
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Changes made from version 3.40 to 4.10:

  1. Added ability to display FIT Activities on the map.
  2. Improved hiking route calculation performance.
  3. Fixed issue with using Spell Search to find cities in BirdsEye Direct.
  4. Fixed issue with deleting routes.
  5. Fixed issue with erroneous Track Archive Error dialog displaying at startup.
  6. Fixed keypad input preventing Wi-Fi networks from being added.
  7. Fixed issue with trip info fields not resetting.
  8. Fixed issue with displaying invalid positions in some position formats.
  9. Fixed issue with mismatched durations in Trip Computer and Recording Controls when using Expedition Mode.
  10. Fixed issue with not being able to display HuntView maps if a BirdsEye map is visible.
  11. Fixed issues with connecting to Bluetooth bike speed, cadence, and speed + cadence sensors.
  12. Fixed issues with CIQ applications not being able to download content.
  13. Fixed issue with displaying incorrect coordinates on the Satellite page when in satellite demo mode.
  14. Fixed issue with sending XERO locations to another device.
  15. Fixed issue with not properly displaying paired inReach Remote device as connected.
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Changes made from version 3.10 to 3.40:

  1. Fixed issue where spot soundings were permanently disabled.
  2. Fixed possible issue on the map where we would list "use" instead of "go".
  3. Fixed potential issue where route activity was not saved after changing profiles.
  4. Fixed potential shutdown when "Recording Controls" is in the page sequence.
  5. Fixed issue where we would delete GPX files on SD cards during Delete All.
  6. Fixed possible issue when leaving Weather page from page loop.
  7. Fixed possible issue with mass storage locking up.
  8. Fixed possible issues with MOB key.
  9. Fixed possible issues with WiFi set up page.
  10. Fixed possible shutdown when using Area Calculation.
  11. Fixed possible shutdown during large Birdseye downloads.
  12. Fixed possible shutdown with changing dashboards.
  13. Fixed timing for flashlight SOS morse code.
  14. Added ability to hide/show the dashboard on the map.
  15. Added Geocaching options to main map page.
  16. Improved altitude accuracy in Expedition Mode.
  17. Improved altitude accuracy with auto calibration.
  18. Updated magnetic compass deviation.
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Changes made from version 3.00 to 3.10:

  1. Added ability to view upcoming turns in active route.
  2. Added support for remotely launching Connect IQ apps.
  3. Added additional Connect IQ cryptography support (KEY_PAIR_ELLIPTIC_CURVE_SECP224R1 and KEY_PAIR_ELLIPTIC_CURVE_SECP256R1).
  4. Added ability to select from multiple found ANT/BLE sensors when searching for one.
  5. Added support for the Swiss grid CH-1903+ position format, see also National Survey LV95.
  6. Fixed issue with custom maps on SD cards.
  7. Fixed issue with calorie data field when using a heart rate monitor.
  8. Fixed issue with coordinate entry in some position formats.
  9. Fixed issue with proximity alerts of points loaded via POI loader.
  10. Fixed potential issue when stopping navigation when viewing the active route directions.
  11. Fixed issue that could occur after moving a waypoint.
  12. Improved activity data on Garmin Connect.
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Changes made from version 2.80 to 3.00:

  1. Added support for G3 Marine Cartography.
  2. Added TracBack to active track map review menu.
  3. Fixed possible issue with ascent/descent stats during Expedition Mode.
  4. Fixed possible issue on system resets.
  5. Fixed possible issue when routing to photos.
  6. Fixed possible issue when stopping navigation.
  7. Fixed possible issue when downloading Geocache Live lists.
  8. Fixed possible issue with track save portion page.
  9. Fixed possible issue on photo viewer when there are no photos.
  10. Fixed smart notifications after new pairing.
  11. Fixed possible issue with large Birdseye downloads.
  12. Fixed issue where ghost waypoints were appearing in Waypoint Manager.
  13. Fixed Chirp icon missing from the Geocache Dashboard.
  14. Improved CIQ app support.
  15. Improved photo viewer menu title to be consistent across platform.
  16. Improved download speeds of larger Birdseye Direct images.
  17. Moved activity type (once resided in Fitness) into recording setup.
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Changes made from version 2.50 to 2.80:

  1. Fixed possible issue when syncing with Garmin Explore App.
  2. Fixed possible issue when saving or deleting waypoints.
  3. Fixed possible issue with RINEX data.
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Changes made from version 2.10 to 2.50:

  1. Added support for Connect IQ 3.0.
  2. Added support for SK 42 grid system.
  3. Fixed issue on satellite page and empty lists.
  4. Fixed issue with Connect IQ tones.
  5. Fixed issue with Bluetooth setup from weather or geocaching.
  6. Fixed issue with short address numbers.
  7. Fixed issue with total ascent in saved track.
  8. Fixed issue when ending track navigation.
  9. Fixed issues with map page.
  10. Fixed issue with cancel option on power on settings clear.
  11. Fixed issue where geocache filters weren't being applied.
  12. Fixed issue on confirmation prompts.
  13. Fixed issue with temperature data field text.
  14. Fixed issue with custom map dashboards on stop navigation.
  15. Fixed issue routing to next stage geocache.
  16. Fixed issue where maps would load on every power-up.
  17. Fixed issue when accessing waypoint averaging from page ribbon.
  18. Fixed issue where some highway and freeway map labels were being cut off.
  19. Fixed issue causing weather map UI slowness.
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GARMIN GPSMAP 66s GARMIN GPSMAP 66st GARMIN GPSMAP 66sr GARMIN GPSMAP 66i Rugged hand held GPS devices with large color display, integrated base map, auto-routing, slot for uSD memory card, high-speed USB interface, electronic compass, barometrical altimeter, support for WiFi and wireless communication with compatible devices. The GPSMAP 66st/66sr/66i come furthermore with pre-installed maps TopoActive Europe. All models support the U.S. GPS and the European GALILEO satellites, the models GPSMAP 66s and 66st support also the Russian GLONASS satellites. The model GPSMAP 66sr supports GPS, GLONASS and GALILEO simultaneously (Multi-Band). The GPSMAP 66i is capable of sending and receiving short messages and triggering interactive emergency calls to GEOS via Iridium satellites from every location worldwide without the need of a mobile network (inReach subscription required), see detailed description.

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