SURREY SENSORS LTD. FIRMWARE UPDATE UTILITY - FD7HP 09/10/2025

Firmware update for FD7HP-series probes, for use with software and NI LabView SDK versions 3.x 

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IMPORTANT NOTE This firmware is a minor update to improve efficiency and eliminate frame errors when running the resource-intensive dynamic calibration algorithm in real-time on older or more heavily-loaded systems. This update should be installed on all probes manufactured before October 2025, and will not affect compatibility with any existing systems or VIs.
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We recommend that users record the contents of the EEPROM and download the dynamic calibration constants before updating the firmware. An unplanned interruption of power or signal during firmware update may corrupt the on-board memory. 

** Instructions 

Ensure that the probe is connected to the computer using the USB cable originally supplied with the product. 

Ensure that all the files contained within this ZIP archive are extracted into the same directory, and that the executables are launched from that directory. Do not rename any of the data files or directories. 

Run the "Firmware updater SSL32.exe" utility. Select the correct COM port for the pressure scanner to be updated, and in the "Firmware file path" window, navigate to the new probe firmware *.HEX file provided. Run the software by clicking "Run" (the arrow icon under the menu bar). 

** WARNING: Do not interrupt the power to the system or disconnect the USB cable while the firmware update utility is running, or the probe may be permanently disabled. 

When complete, the probe can be disconnected from the USB cable and used as before.
