What firmware changes have taken place on the Maretron DSM150?

You can update the device with Maretron’s N2KAnalyzer software tool.

1.7.5.3, 2.7.5.3 (2018-01-24)

1.7.2.1, 2.7.2.1 (2017-05-11)

Added support for differential mode with single-phase fuel flow sensors (e.g., Coriolis sensors) (4214)
Added support for the NMEA 2000 Heartbeat Message (PGN 126993) (4216)
Added support for variable PGN transmission intervals for TLA100, TAA100, TLM100, TLM150, and TLM200 (4215)
Corrected a problem where PGN 130312 did not display for certain sources (4041)
Corrected a problem where Total Fuel Rate and Total Fuel Economy did not display under certain circumstances (4174)
In SMS100 configuration, corrected an issue sending test messages (4180)
Added support for PGN 127497 for Total Fuel Rate display (4053)
Corrected a problem in the display of VDR100 memory sizes (4062)

1.6.6.3, 2.6.6.3 (2016-08-29)

Corrected month display errors in time display (3938)
Corrected a problem where the ALM100 configuration menu was not displayed correctly (3986)

1.6.5.2, 2.6.5.2 (2016-07)

Added ability to display the 127252 Heave PGN (3412)
Corrected a problem where bus voltage in the Bus Status screen was shown as 0.0 V instead of a dash even though the DSM150 cannot measure bus voltage (3045)
Corrected a problem displaying force values when units are specified as kg (3737)
Corrected a crash that occurred when color setup was performed (3747)
Corrected a problem that sometimes occurred in sunrise/sunset calculations (3920)
Corrected a problem where testing an alert did not result in an audible alarm on the local display (3923)
Corrected a crash that occurred during the test option in SMS100 configuration (3847)

1.6.3.4, 2.6.3.4 (2015-10)

Corrected a problem in SSC200/SSC300 configuration where NMEA0183 sentence ID’s were incorrectly displayed (3609)
Corrected a problem introduced in version 1.6.2.4 where alerts did not work (3660)
Corrected a problem where the “Since” time was not correctly displayed for hardware timers and counters (3663)

1.6.2.4, 2.6.2.4 (2015-10)

Corrected a mathematical error which affected Anchor Watch display (3609)
Added support for configuration of the new CLM100 Current Loop Monitor
Added support for display of proprietary PGN’s transmitted by the CLM100
Removed unnecessary instance selection from Fuel Management->Trip Fuel Used screen setup (3233)
Corrected a problem where multiple labels could be displayed on a favorite screen in case of an instancing conflict (2982)
Removed Demo Mode: Output Mode (2504)
Corrected a problem where the display could reset during configuration of favorite screens in the “four quarters” format (3518)
Corrected a display problem during configuration of Switch/Breaker favorite screen (3512)
Corrected a problem with DST110 speed calibration (3494)
Removed decimal point from wind speed Numeric display (it is still there in Numeric/Precision) (3076)
Corrected an issue selecting the half gauge display in favorite screen configuration (3043)
Corrected an issue with scaling of line graphs for true wind speed (2989)

1.5.3.5, 2.5.3.5 (2015-03)

Added support for configuring FPM100 to report Altimeter, Filter, Fuel, and Oil pressure sources
Added calibration/configuration support for upcoming devices
Corrected a problem where VDR usage percentage was incorrectly displayed

1.4.19.3 (2013-07-19)

Supports display and reset of hardware timers and counters in DCR100, RIM100, and SIM100
Uses any available SMS100’s on the network if there initially are multiple units on the network and one is later removed
Supports display of the 130316 Temperature, Extended Range parameter group
DC->Battery Time Remaining will display "Infinite" if the battery is being charge or is not providing any current to its load
Supports reset of the Total kW Hours parameter transmitted by the ACM100
Updated the supported NMEA 2000 database version to 2.000

1.4.18.8 (2013-06-05)

1.4.17.5 (2013-04-03)

Supports configuration of VDR100 LAN connectivity which will be available in an upcoming release of VDR100 firmware.
Fixed a problem configuring custom titles on favorite screens where a custom title on one favorite screen could be inadvertently overwritten when a custom title was defined for a different favorite screen.
Removed 127502 Binary Switch Control from received PGN list since it is not used by the display.

1.4.16.5 (2013-01)