Change History

---

GMI 20 software version 3.60

as of January 6, 2023

Changes made from version 3.50 to 3.60:

• Fixed an issue that might prevent the unit from shutting down properly.

Changes made from version 3.40 to 3.50:

• Updated internal magnetic variance table using the WMM 2020 model projected to Dec 31st 2021.
• Changes to support manufacturing.

Changes made from version 3.30 to 3.40:

• Changes to support manufacturing.

Changes made from version 3.20 to 3.30:

• Updated internal magnetic variance table.

Changes made from version 3.10 to 3.20:

• Improved NMEA 2000 device handling.

Changes made from version 3.00 to 3.10:

• Improved custom PC data display after timeouts.

Changes made from version 2.90 to 3.00:

• Improved ground wind speed data field.
• Improved tank volume conversion accuracy.

Changes made from version 2.80 to 2.90:

• Changes to support manufacturing.

Changes made from version 2.70 to 2.80:

• Changed set arrow to relate to bow of vessel.

Changes made from version 2.60 to 2.70:

• Fixed LORAN storage over power cycles.
• Changed Elevation data field to always display altitude in reference to mean sea level.

Changes made from version 2.50 to 2.60:

• Improvements to Wind Sailing Gauge.
• Improved translations.

Changes made from version 2.40 to 2.50:

• Fixed support for 18th custom data field.
• Improved Course Over Ground data filtering.
• Improved Czech, Simplified Chinese, and Swedish translations.

Changes made from version 2.30 to 2.40:

• Added Wind Sailing Gauge.
• Improved the appearance of Close Hauled Gauge.
• Added support for the Slovenian language.
• Added data filtering.
• Added custom data support.
• Fixed issue with NMEA 0183 input data.

Changes made from version 2.20 to 2.30:

• Fixed calibration of Airmar DST devices.

Changes made from version 2.10 to 2.20:

• Improved reliability of NMEA 2000 software updates.

Changes made from version 2.00 to 2.10:

• Fixed potential instability when the unit received GPS data.
• Added support for true wind direction.
• Added support for the following languages: Portuguese (Brazilian), Bulgarian, Czech, and Polish