SURREY SENSORS LTD. FIRMWARE UPDATE UTILITY - NACTA8 22/10/2026

Firmware update for NACTA8 8-channel micro-CTA driver system, for use with software and NI LabView SDK versions 3.x 

We recommend that users record the contents of the EEPROM before updating the firmware. An unplanned interruption of power or signal during firmware update may corrupt the on-board memory. 

** Instructions 

Ensure that the system is connected to the computer using the USB cable originally supplied with the product. The sensors themselves to not need to be connected. 

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 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 system may be permanently disabled. 

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