What's new in version 6.50 (March 2026)

Applicable receivers:  SPS986

We recommend that you carefully review this information for any possible impacts to workflows and take appropriate action to avoid disruptions.

CAUTION – All data files in the receiver are deleted when you install new firmware. Before you start, ensure that you first download any data files from your receiver to your computer.

For information about software compatibility, see Supported software.

To upgrade your receiver’s firmware, a current and valid receiver warranty is required. Your warranty must cover the time period beyond the first day of the month of the “Warranty Date of May 2025".

Main changes and improvements

GNSS signal tracking and processing enhancements

Galileo. In anticipation of upcoming Galileo system pilot encryption, E6 tracking now defaults to "Data-only" and Pilot will not be available.

GLONASS:

  • Fixed a defect where GLONASS L1 C/A pseudorange showed several meters of code drift during high ionospheric activity in Southern Europe.

  • Corrected a logic error in CMR+ where GLONASS SVs were dropped when GPS SV count exceeded 12.

QZSS:

  • Added full support for the new L1C/B signal (QZS-6), including corrected phase alignment and appropriate RINEX/T04 logging.

SBAS. Updated the web interface labeling and coverage area for PRN 139 to reflect its allocation to MSAS (QZS-7).

Anti-Jamming:

  • Addressed loss of Galileo secondary signal loss in instances where the primary signal is jammed.

  • Improved positioning with a complete loss of the L1 signal by leveraging a combination of L2 and L5 signals and an updated ionospheric model.

Dynamic Modeling. Addressed a limitation where receivers would stop generating positions when velocity exceeded 350 m/s while using the Kalman filter.

Base Follow enhancements. Optimized "Base Follow" logic to correctly handle E6/L6 signals and adjusted the web interface reference position warning threshold to 25 meters.

Anti-spoofing. Enhanced spoofing detection with a faster cold start:

  • The receiver's cold start is accelerated by leveraging ephemeris data (if available) within the Trimble RTX® stream.

  • Additionally, the system supports robust spoofing detection powered by the ProPoint® engine.

IonoGuard™:

  • Improved Trimble RTX performance with IonoGuard during periods of elevated ionospheric activity.

  • Addressed issues with some CMRx messages not being decoded with IonoGuard enabled.

  • IonoGuard performance. Refined IonoGuard status indicators in the web interface to ensure the indicators correctly clear when base corrections stop.

RTK. Improved RTK performance under harsh environments by leveraging SNR information of the base to help with the rover’s performance.

Security and connectivity

Enhanced Network Security. To mitigate potential security risks, broadcast ping echoes and IP redirects have been disabled by default.

Authentication Logic. Improved the clarity of password lockout settings by the category to Internet Only to better differentiate between private LAN and public network access. See Security Configuration.

NTRIP Updates. Corrected a miscalculation in the NTRIP Caster "Content-Length" header that was uniformly reporting two bytes longer than the actual body.

Web interface and data management

Data Logging enhancements:

  • Added a live UTC display to the Data Logging page to help manage manual data logging sessions.

  • FTP Push. Fixed an issue with FTP Push so the Pair button only displays when SFTP is selected. Fixed default port assignments (21 for FTP, 22 for SFTP).

  • Fixed a defect preventing the naming of RINEX 4.01/2.11 files according to IGS standards.

  • Corrected L1C signal ID mapping in BINEX Observation Code records.

HTTPS and HTTP. Improved the process of enabling/disabling HTTPS and HTTP in the Network Configuration menu.

Password check. To prevent accidental lockouts, a password check has been implemented when changing the system security from Disabled to Enabled.

Platform and hardware support

IMU and AINS performance. Improved IMU sampling synchronization and resolved AINS heading stability issues when static in challenging GNSS environments.