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Check Firmware Version |
- Power on the inReach
Messenger Plus.
- Open 'Settings
> System > About'.
- Scroll to view the Unit ID, Address,
IMEI, and Authorization Code as well as Firmware, Multi-GNSS, BLE/ANT and
Iridium versions:
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Firmware Installation |
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Garmin Express
Device updates for your inReach Messenger Plus are managed with the
Garmin Express computer application.
- Connect the inReach Messenger Plus to your computer using a suitable USB-C cable.
- Open the Garmin Express application and choose your device from the menu.
- Select desired updates and follow the prompts as directed to
complete installation.
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Messenger App
Device updates for your inReach
Messenger Plus can also be performed using the
Garmin
Messenger app.
- Power on the inReach Messenger Plus.
- Open the Messenger app on your mobile device.
- Verify the inReach Messenger Plus and the
Messenger app are connected.
- Open the
 Menu in the Messenger
app.
- Select 'Software Update'.
- Follow any prompts as directed to install available updates.
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NOTE: Loading older firmware versions will clear all user data from the device (will require inReach activation).
- Download and extract the desired *.GSP firmware update.
- Rename *.GSP to
GUPDATE.GSP.
- Connect the inReach Messenger Plus to your computer and enter
MTP Mode.
- Copy GUPDATE.GSP to [GPSr]\Internal Storage\Garmin\GUPDATE.GSP.
-
If loading an older firmware version, create a
force.tmp
file in the [GPSr]\Internal Storage\Garmin\
directory.
- Disconnect and reboot the inReach Messenger Plus.
- When prompted to install the new firmware version, select 'Yes'.
- The inReach Messenger Plus will restart automatically after the firmware update is complete.
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inReach Messenger Plus (4487) Firmware Update History |
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SW |
GNSS |
BLE/ANT |
Iridium |
Published |
Notes |
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6.05 |
11.01 |
1.02 |
1.4.5 |
14FEB25 |
- Added ability to rename verified
inReach Remote devices
- Added ability to resend a failed
message from paired app
- Added new menu option to check for
software updates
- Improved TracBack navigation
- Improved scrollbar contrast
- Improved software update handling
with low memory
- Improved software update prompt to
default to yes
- Fixed overlapping text on marine
weather
- Fixed incorrect time on trackpoints
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5.02 |
11.01 |
1.02 |
1.4.5 |
01NOV24 |
- Added support for selecting
multiple contacts when composing new messages
- Improved data usage bars
- Fixed issues with characters in
some fonts
- Fixed issue with incorrect
conversation preview message
- Fixed issue with uncontrolled
shutdowns at low battery
- Fixed possible issue with rapid
battery drain during reverse charging
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4.08 |
11.01 |
1.02 |
1.4.5 |
18SEP24 |
- Fixed inReach Remote disabling
after MTP or charge mode
- Fixed erroneous rejection of
inReach remote verification prompts
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4.03 |
11.01 |
1.01 |
1.4.5 |
18SEP24 |
- Initial Production Release
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