GPSrChive GPSMAP 66sr



Check Firmware Version Garmin Express WebUpdater Wireless Updates GCD Updates GCD Update Procedure EXE Updates EXE Update Procedure RGN Firmware Install GPS Chipset Updates 2.00.13 2.00.11 2.00.06 2.00.05 2.00.04 2.00.03 2.00.02 2.00.00 GPSr Firmware Updates 6.10 5.70 5.50 5.40 5.20 4.90 3.80 3.30 2.90 2.80 2.70

Firmware

Check Firmware Version

Power on the GPSMAP 66sr
Select [Setup > About]
The GPSMAP 66sr Software (Firmware) Version and Unit ID will be displayed:
Firmware versions ending in 1-9 are Beta releases
Firmware version ending in "0" are Full releases

Garmin Express

Firmware updates, map updates, Connect IQ applications and other optional software improvements for your Garmin GPSMAP 66sr are managed with the Garmin Express application. Links to versions for both PC and Mac can be found in Software.

Connect your Garmin GPSMAP 66sr via USB and enter Mass Storage Mode
Start the Garmin Express application and choose your device from the menu
Select desired updates and follow the prompts to complete installation

WebUpdater

The Garmin WebUpdater program has been reported to find and install updates available for the GPSMAP 66sr that other methods fail to locate. Versions for both PC and Mac are available in Software.

Connect your Garmin GPSMAP 66sr via USB and enter Mass Storage Mode
Run the WebUpdater application and select your device from the menu
Follow the prompts to keep your GPSMAP 66sr updated

Wireless Updates

When connected to the internet via an active Wi-Fi connection, the GPSMAP 66sr will periodically check for (non beta) firmware updates and download them seamlessly in the background when available. Once the download has completed, the GPSMAP 66sr will prompt the user to install the firmware update at the next power-on event.

GCD Updates

Current (non beta) firmware updates are available directly from Garmin using the URL https://download.garmin.com/software/GPSMAP66sr_xyz.gcd and substituting xyz with the desired three digit firmware version. For example, to download firmware version 2.70, replace xyz with 270.

GCD Update Procedure

Use the links in Firmware History to download the zipped file for the desired version
Unzip the downloaded archive and extract the *.gcd file
Rename the *.gcd file to gupdate.gcd
Connect the GPSMAP 66sr to your computer and enter Mass Storage Mode
Copy the gupdate.gcd file to [GPSr]\Garmin\gupdate.gcd
Disconnect and reboot the GPSr
Once the update is completed, the GPSr will delete the gupdate.gcd file

EXE Updates

Some firmware updates (usually betas) are released as a windows executable containing a compressed gupdate.gcd file and an installer program. Regardless of OS, the *.exe can be opened with an archive tool and the gupdate.gcd file can be extracted for manual updating as outlines above under GCD Update Procedure.

EXE Update Procedure

Use the links in Firmware History to download the *.exe file for the version you need
Run the downloaded executable and follow the instructions provided

RGN Firmware Install

Should you ever find yourself with an GPSMAP 66sr that refuses to complete the boot process and all other options have failed to restore the unit to its former glory, a forced RGN Firmware Installation may be your only hope.

GPS Chipset Type ?? (xxxx) Software Update History

New GPSMAP 66sr GPS chipset software updates are embedded within device firmware updates.


GPS Version	Release Date	Release Notes
2.00.13	06JUN23	Improved GPS performance in some situations.

2.00.11	02FEB23	Improved GPS performance in some situations.

2.00.06	01JUN22	Improved GPS performance in some situations.

2.00.05	24FEB21	Unpublished.

2.00.04	05OCT20	Allow for functionality in India.

2.00.03	12SEP20	Improved GPS performance.

2.00.02	27MAY20	Fixed Expedition Mode issue.

2.00.00	21MAY20	Unpublished.

GPSMAP 66sr (3694) Firmware Update History


Firmware Version	Release Date	Release Notes
6.10	07JUL23	Added option to turn on/off course alerts (Setup > Routing). Improved GPS performance in some situations. Fixed an issue where users were unable to cancel a prompted master reset. Fixed a possible shutdown when exiting expedition mode. GPS chipset software updated to version 2.00.13.

5.70	10FEB23	Fixed possible issue when attempting to navigate courses. Fixed possible issue with searching for waypoints near a city. Fixed missing/expired CPE status using Wi-Fi. Fixed potential issues with acquiring a GPS fix using Multi-GNSS. Fixed possible shutdown when saving activities from the map page. GPS chipset software updated to version 2.00.11.

5.50	03JUN22	Fixed a possible issue where POIs wouldn't appear on the map. GPS chipset software version is 2.00.06.

5.40	01JUN22	Fixed a possible shutdown when entering expedition mode. Fixed a possible issue with editing a Geocache filter. Fixed a possible issue with removing an item from the page sequence. Fixed a possible issue with modifying the coordinates of Multi-Caches. Fixed a possible issue with editing a Course name. Fixed unit settings not being profile-dependent. GPS chipset software updated to version 2.00.06.

5.20	26JAN22	Fixed issue with main menu as base page. Fix shutdown when downloading BirdsEye imagery when SD Card is inserted. Improved Find key to search near map cursor position when appropriate. Fixed possible issues with expedition mode. Fixed possible issues with Search Near option. Fixed possible issue with Cancel button when saving a course. Fixed incorrect option menu items when reviewing a course. Fixed incorrect option menu items when reviewing the current recording. Fixed possible issue when changing long course names. Fixed incorrect English text when deleting a profile. Fixed possible issue where course review page could show stale data. Fixed routing prompt appearing twice when adding a via point. Fixed possible issues with menus in Connect IQ applications. Fixed possible unexpected behavior when saving or clearing an activity. Fixed adding via points to on road routes to a single point. Fixed possible shutdown when downloading Birdseye Direct images. Fixed missing lap data in course files generated on the device. Fixed incorrect tone for on and off course alerts. Fixed issue with on and off course alerts appearing when they should not. Fixed possible issue syncing courses with Explore mobile. Fixed issues searching for address numbers with more than 6 characters. GPS chipset software version is 2.00.05.

4.90	17NOV21	Added support for creating courses. Courses can be navigated point to point like a track, or using map data like a route. Added support for syncing courses with Garmin Explore. Requires updated Garmin Explore app. Added ability to convert routes and tracks to courses. Added ability to pair to Garmin Explore without first pairing to Garmin Connect Mobile. Requires updated Garmin Explore app. Added option to search for POIs near a selected city. Added on course and off course alerts to track navigation. Added support for Connect IQ 3.1. Improved status bar to show paired sensors instead of only enabled sensors. Improved Bluetooth device names in sensor setup. Fixed possible issues with live geocache lists. Fixed possible issues returning to the adventure review map from another page. Fixed time data when copying tracks in reverse. Fixed issue where route list would not update after route was deleted. Fixed issue with keyboard language not persisting through power cycles. Fixed an issue deleting adventures that contain routes. Fixed possible issue with elapsed time when recording is paused. Fixed possible shutdown selecting Current Activity from the Recorded Activities app. Fixed issue where messages would appear during power-down. Fixed pressure labels for hectopascals. Fixed possible issue with missing track stats in GPX files. Fixed issue selecting the first point on the active route page. Fixed possible shutdown on keyboard page. Fixed display issue on photo viewer page. Fixed recording with expedition mode when auto-start is off. Fixed issue where archived tracks could not be deleted. Fixed issue with LiveTrack data not being sent correctly. GPS chipset software version is 2.00.05.

3.80	25JUN21	Fixed Track color issue. Fixed possible issues with Explore sync. Fixed possible issue with incorrect track distances when using expedition mode. Fixed issue where the text and keyboard languages could get out of sync. Fixed possible invalid track GPX files after changing color. Fixed possible issue with inReach remote message notifications. Fixed possible missing band labels on satellite page. Fixed possible issue when viewing the Current Activity. GPS chipset software version is 2.00.05.

3.30	12MAR21	Fixed possible shutdown when sending a Quick Text from inReach Remote. Fixed issue with weather map not defaulting to active weather position. Fixed possible issues with items missing during Explore Sync. Fixed an issue where certain submenus could be drawn off screen. Fixed issue setting custom waypoint offsets using filename. Fixed possible issues that caused the main menu to draw over the current page. Fixed possible shutdown related to BirdsEye direct downloads. Fixed possible issue getting stuck on a page after powerup. Fixed possible issues with postal code searches. Fixed issue where proximity alerts would only alert once. Fixed missing alerts from points loaded using POI loader tool. Fixed adding hidden SSID networks. Fixed possible issues with time restricted speed limits. Fixed navigation to a geocache to always continue until ended by user. Fixed geocache file list to wrap. Fixed some issues with geocache photos. Fixed issue where certain pages could incorrectly appear to have tabs. Fixed issue where fit activities could be missing start time data. Fixed issue where bearing line would not appear on map in CDI compass mode. Improved recent finds list to include navigation started from the map. Improved functionality of navigation features with Explore. Improved round trip routing setup experience. GPS chipset software updated to version 2.00.05.

2.90	20NOV20	Fixed issue with geocache proximity alarm slowing down start up times. Fixed issue that could occur when clearing geocaching live data while navigating to a geocache. Added support for starting navigation from the Explore App. Added Rinex logging support. GPS chipset software version is 2.00.04.

2.80	16OCT20	GPS Performance Improvements. GPS chipset software updated to version 2.00.04.

2.70	24SEP20	Initial Production Release. GPS chipset software version is 2.00.03.