Updates & Downloads
GSD 21 software version 2.60
as of August 10, 2009
USB Card Programmer
Download (1.33 MB)
View download instructions and system requirements
Change History
Changes made from version 2.50 to 2.60:
- Updated software to support new memory chip.
- Fixed potential shutdown.
Changes made from version 2.40 to 2.50:
- Fixed potential shutdown.
- Improved accuracy of water temperature readings.
Changes made from version 2.30 to 2.40:
- Improved sonar performance.
Changes made from version 2.20 to 2.30:
- Improved 50kHz performance in dual frequency mode.
Changes made from version 2.10 to 2.20:
- First version to support remote updating of GSD 21 software.
Changes made from version 2.00 to 2.10:
- Improved 50kHz performance in less than 50ft of water.