Flex NX - GSSI Geophysical Survey Systems, Inc.

Technical Support

Welcome to the Flex support portal for Flex NX and Flex LT systems. This page hosts the most current documentation, software updates, and GSSI Academy training videos. You’ll also find a schedule of upcoming Flex NX training classes.

Make sure to check back regularly – we are always working on something new!

Can’t find what you are looking for, or have specific questions? Get quick and easy access to our Customer Service team during our regular business hours (8:30 AM to 5:00 PM EST).

Helpful Resources

Download user manuals, software updates and browse training videos.

User Manuals
Training Videos
Software Updates

User Manuals

Flex NX Quick Start Guide

Release Date: 06/05/2025

Getting Started with Flex NX

Download
Flex LT Quick Start Guide

Release Date: 06/05/2025

Getting Started with Flex LT

Download
Nexus Elements Quick Start Guide

Release Date: 06/05/2025

Getting Started with Nexus Elements

Download
User Guide for Flex Systems

Release Date: 06/11/2025

User Guide for Flex Systems

Download
Flex Mode Best Practices & FAQ

Release Date: 05/29/2024

Flex Mode Best Practices & FAQ

Download

Product Videos

The GSSI Training Academy has created a series of videos to get you started with your Flex NX system.

Welcome to Flex NX

Flex NX Understaning the Dashboard
Flex NX Updating Software
Flex NX Collection Basics
How to Operate Flex Mode
Flex NX: Scanning Post Tension Cables
GSSI Fusion | Fast, Efficient Reporting Software Tutorial

Latest Release | Version 2.264

IMPORTANT: This latest release only supports upgrading from version 2.178 and later.

To upgrade to version 2.178, click here. Then you can perform the update to version 2.264.

Please refer to this document for guidance on updating to software version 2.264.

If you need assistance please contact softwaretechsupport@geophysical.com.

Release Date: 06/05/2025

File Size: 1GB

Release Notes:

Read me first!

This software update is for Flex NX, Flex LT, NX25, and NX15.
Before updating to this software version (v2.264) please verify that your Flex NX, Flex LT, and your satellite antennas are running the currently released version (v2.178). If not, please contact softwaretechsupport@geophysical.com for assistance.
Ensure that satellite antennas are powered off before updating Flex NX or Flex LT. After Flex NX or Flex LT are updated, reboot manually before powering on and updating NX25 and NX15.
In rare cases your system may experience issues when updating to v2.264. If you encounter update problems, please refer to GSSI’s Flex NX/LT USB Recovery – Version 2.264 documentation for an alternative update option or directly contact GSSI’s Software Support Team at softwaretechsupport@geophysical.com.

New Features

New Hardware Option: This software update adds full support for the Flex Tether Module (sold separately), allowing wired paring between a Flex system (Flex NX or Flex LT) and NX25 and NX15 satellite antennas. The Tether Module enhances your jobsite scanning options by unlocking wired NX25 and NX15 connections to Flex LT. Additionally, disable wireless communication (Flex NX only) and use your Flex NX/LT system and satellite antenna combo in Wi-Fi restricted facilities.

New interface: We are thrilled to introduce the Nexus Elements Interface! This new operating mode is a significant upgrade for NX25 and NX15. The antennas can still connect to Flex NX via Wi-Fi and Tether Module, or Flex LT via the Tether Module, but we’ve added a powerful new feature. NX25 and NX15 can now operate independently of Flex NX or Flex LT as mark-and-go systems with a highly intuitive, simplified, and no-file-saving user interface. Can’t wait to check it out? Simply update your Flex NX or Flex LT and then update your satellite antenna(s) to roll out the game-changing Nexus Elements Interface. Next, use your Apple or Android mobile device to connect to the antenna. Done! For more information, please refer to the User Guide for Flex Systems and the Nexus Elements Quick Start Guide at https://www.geophysical.com/support/flexnxsupport.

Along with the Nexus Elements Interface we are launching two new product offerings: NX25 Small Area System and NX15 Deep Target System. The NX25 Small Area System is ideal for mark-and-go scanning in tight spaces and on walls and ceilings. The NX15 Deep Target System is perfect for scanning thick concrete and identifying subgrade utilities buried below concrete installations. These systems can be purchased, operated, and updated without Flex NX and Flex LT, and they connect to a mobile device for quick and easy mark-and-go scanning without file saving. If file saving is needed, our Flex NX and Flex LT kits include one or both satellite antennas and provide project and file management for NX25 and NX15.

For more information:

Please visit the NX25 website (https://www.geophysical.com/products/nx25) and the NX15 website (https://www.geophysical.com/products/nx15), or contact sales@geophysical.com.

Miscellaneous Improvements

Reduced LED brightness on NX25 and NX15.
Added low storage alerts for Flex NX and Flex LT.
Added Spanish language support and improved text string translations for various languages.
Various bug fixes and performance improvements.

Download Now

Previous Versions

Flex NX 2.178
Release Notes: Learn More
Read me first!
- This is a major software update, therefore the update process may take longer than previous versions – please be patient.
- After Flex NX is updated, reboot manually before attempting to update a satellite antenna.
- Please ensure that satellite antennas are powered off before attempting to update Flex NX.
New Product Release:
- We have released the new Flex LT system (https://www.geophysical.com/products/flex-lt)! Flex LT and Flex NX share the same software environment, so future Flex System Updates will update both systems with a single update package.
New Features
- New collection mode: 2D Remote Control (for Flex NX and wirelessly connected satellite antennas only). This is an enhanced version of Screen Mirroring that broadcasts the full Flex NX 2D Collection Screen to a Wi-Fi enabled mobile device, providing access to the complete left flyout menus (Gain, Display, and Depth), Start/Stop Scan, Screengrab, Fast Forward, and Delete. Note: Target Tagging is not available in 2D Remote Control.
For guidance on using 2D Remote Control please refer to the latest Flex NX Quick Start Guide (https://www.geophysical.com/support/flexnxsupport).

Use this feature with Flex NX, or with a paired and active NX15 or NX25 satellite antenna. Try 2D Remote Control using a tablet for a larger viewing screen, or a smart phone for a lighter and more portable display. Flex NX must remain powered on when using 2D Remote Control. However, as long as you are within 65 feet (20 meters) of Flex NX you can scan with a satellite antenna and mobile device without bringing Flex NX with you. This is especially useful when scanning on scaffolding or ladders, or in other dangerous, elevated, or confined situations. Additionally, use this feature to capture full UI screengrabs with your mobile device.
- Tap to Hide. During data collection, simply tap the Flex NX or Flex LT screen once to hide the on-screen menus and controls (Top Navigation Menu, Left Flyout Menu, and lower Control Bar). Tap the screen again to bring back the menus. This feature is also available in when using 2D Remote Control on a mobile device.
Feature Improvements
- Display Gain: Auto Gain. Implemented an auto gain feature and improved performance of Gain Slider and Gain Regions.
- Flex Mode: Voxel export [Flex NX only]. When transferring projects containing Flex Mode scans, Flex NX now transfers a Flex Mode .BIN file containing a voxel model.
- Flex Mode: Improved Depth and Gain [Flex NX only]. Increased depth range of Flex Mode from 30cm (12in) to 68cm (27in), and improved depth-based gain for Flex Mode.
- Project Transfer: .FSN file. Enabled export of .FSN file to optimize the import of Flex NX data into GSSI Fusion. Simply transfer the .FSN file to a USB drive or mobile device, then upload the .FSN file to GSSI Fusion. This will create a new GSSI Fusion project with the organizational structure from Flex NX, including Project Results organized by Area of Interest. For more information on GSSI Fusion, and to learn how Fusion can optimize and streamline your project reporting workflow, sign up for a free GSSI Fusion account at https://fusion.geophysical.com/.
Miscellaneous Improvements
- Improvements to system stability added on 02/27/2025
- Improved aspect ratio persistence when zooming data with Width Scaling applied.
- Adjusting dielectric during collection no longer affects Display Gain.
- Improved text string translations for various languages.
File Compatibility Notice
- This software update is not backwards compatible with Flex Mode scans collected using Nexus Software Version 1.582 (the previously released software version). As a result, Flex Mode scans from software version 1.582 cannot be opened in Playback Mode. We expect this to be temporary, and we hope to provide a fix in the near future.
Release Date: 02/27/2025
Flex NX 2.168
Release Notes: Learn More
IfRead me first!
- This is a major software update, therefore the update process may take longer than previous versions – please be patient.
- After Flex NX is updated, reboot manually before attempting to update a satellite antenna.
- Please ensure that satellite antennas are powered off before attempting to update Flex NX.
New Product Release:
- We have released the new Flex LT system (https://www.geophysical.com/products/flex-lt)! Flex LT and Flex NX share the same software environment, so future Flex System Updates will update both systems with a single update package.
New Features
- New collection mode: 2D Remote Control (for Flex NX and wirelessly connected satellite antennas only). This is an enhanced version of Screen Mirroring that broadcasts the full Flex NX 2D Collection Screen to a Wi-Fi enabled mobile device, providing access to the complete left flyout menus (Gain, Display, and Depth), Start/Stop Scan, Screengrab, Fast Forward, and Delete. Note: Target Tagging is not available in 2D Remote Control.
For guidance on using 2D Remote Control please refer to the latest Flex NX Quick Start Guide (https://www.geophysical.com/support/flexnxsupport).

Use this feature with Flex NX, or with a paired and active NX15 or NX25 satellite antenna. Try 2D Remote Control using a tablet for a larger viewing screen, or a smart phone for a lighter and more portable display. Flex NX must remain powered on when using 2D Remote Control. However, as long as you are within 65 feet (20 meters) of Flex NX you can scan with a satellite antenna and mobile device without bringing Flex NX with you. This is especially useful when scanning on scaffolding or ladders, or in other dangerous, elevated, or confined situations. Additionally, use this feature to capture full UI screengrabs with your mobile device.
- Tap to Hide. During data collection, simply tap the Flex NX or Flex LT screen once to hide the on-screen menus and controls (Top Navigation Menu, Left Flyout Menu, and lower Control Bar). Tap the screen again to bring back the menus. This feature is also available in when using 2D Remote Control on a mobile device.
Feature Improvements
- Display Gain: Auto Gain. Implemented an auto gain feature and improved performance of Gain Slider and Gain Regions.
- Flex Mode: Voxel export [Flex NX only]. When transferring projects containing Flex Mode scans, Flex NX now transfers a Flex Mode .BIN file containing a voxel model.
- Flex Mode: Improved Depth and Gain [Flex NX only]. Increased depth range of Flex Mode from 30cm (12in) to 68cm (27in), and improved depth-based gain for Flex Mode.
- Project Transfer: .FSN file. Enabled export of .FSN file to optimize the import of Flex NX data into GSSI Fusion. Simply transfer the .FSN file to a USB drive or mobile device, then upload the .FSN file to GSSI Fusion. This will create a new GSSI Fusion project with the organizational structure from Flex NX, including Project Results organized by Area of Interest. For more information on GSSI Fusion, and to learn how Fusion can optimize and streamline your project reporting workflow, sign up for a free GSSI Fusion account at https://fusion.geophysical.com/.
Miscellaneous Improvements
- Improved aspect ratio persistence when zooming data with Width Scaling applied.
- Adjusting dielectric during collection no longer affects Display Gain.
- Improved text string translations for various languages.
File Compatibility Notice
- This software update is not backwards compatible with Flex Mode scans collected using Nexus Software Version 1.582 (the previously released software version). As a result, Flex Mode scans from software version 1.582 cannot be opened in Playback Mode. We expect this to be temporary, and we hope to provide a fix in the near future.
Release Date: 01/30/2025
Flex NX 1.582
Release Notes: Learn More
New Feature: Width Scaling. Use this data collection setting to stretch or compress the distance scale of a 2D profile and customize the width of hyperbolic targets. This feature is available for all 2D collection, including single channel and split view, and for NX25 and NX15 2D data. Like other Flex NX personalized settings, the last used state is saved and persists through system shutdown/reboot.

User Interface improvements
- NX15 default scan density set to 4 scans/cm to match Flex NX and NX25.
- Added increased zoom level for 2D collection to support close-up view of shallow targets.
- Added ability to use hyperbola matching at any zoom level.
- Added and refined text for multiple languages.
System Stability and Data Quality
- Improved Screen Mirroring performance and stability.
- Improved playback of 2D files.
- Improved wireless connectivity for NX15 and NX25 antennas.
- System-wide performance improvements.
- System-wide data quality improvements.
Release Date: 09/04/2024
Flex NX 1.488

Release Notes: Learn More

Minor bug fixes

Release Date: 06/24/2024
Flex NX 1.485
Release Notes: Learn More
Added Flex Mode collection and activated Vision System hardware
- Top Down View for depth slicing
- 3D Volume View for fully rotatable model
- Added Flex Mode icon to Main Dashboard’s Recent projects pane
- Added Flex Mode option to Add Scan menu in Project Profile
- Added ability to save Flex Mode screen grabs to Project Results
Full support for NX15 Satellite Antenna
- Connect as a wireless accessory device, like NX25
- Added ability for Flex NX to show increased depth range when using NX15
Increased speed and flexibility of file transfer
- Transfer to USB: Flex NX creates a folder on a USB drive and transfers uncompressed Project Results and Data
- Transfer to Mobile: Flex NX creates .zip file and wirelessly transfers Project Results and Data to a mobile device
User Interface improvements
- Added and refined text for multiple languages
- Reconfigured values for Gain Region sliders in 2D Collect Mode
- Added saving of personalized collection and display parameters through reboot
- Added Last Used option to Concrete Cure selection window
System Stability and Data Quality
- Improved Screen Mirroring performance
- System-wide stability and connectivity improvements
- System-wide data quality improvements
Release Date: 05/30/2024
Flex NX 1.239

Release Notes: Learn More

Initial Release

Release Date: 11/20/2023

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