This is a bug fix and maintenance release for the 4.0 High Performance INS firmware release.

Please read the page 4.0.168-stable to get all details about new features and improvements in the 4.0 series.

You can download and install this new firmware release for free using the link below:

Download Firmware  

Specific upgrade from 3.0 and older firmwares

If you upgrading from a firmware older than 3.0, you have to first download and install the failsafe firmware before you can install this firmware package.

Please refer to the dedicated failsafe Update Procedure for a step by step guide.

Release 4.0.328-stable


  • [EKIFW-2121] - Improved NMEA True heading log reporting when HDT arrives before GGA

Bug Fixes

  • [EKIFW-2120] - Fix NMEA True heading standard deviation that was not computed from the antennas base line correctly

  • [EKIFW-2141] - Fixed support for EKINOX-A products

  • [EKIFW-2144] - Web: Fixed output messages preset comparison