Sensor Firmware
Firmware can be easily installed on your sensor using anb_utils.
New Firmware
| Date | Type | Serial No. |
|---|---|---|
| 24/04/2026 | Driver = STM | 300200 and above |
| 30/03/2026 | Driver = ATX | 300199 and below |
| 30/03/2026 | Interface = B | 300028 and above |
| 30/03/2026 | Interface = A | 300027 and below |
Version 20.0 Firmware Update - we recommend all users upgrade to this latest version to benefit from these improvements.
This release represents a step-change in how the sensor runs, improving overall consistency, responsiveness, and data quality. The sensor now operates on a new measurement approach, delivering stable pH readings every 5 seconds for improved data resolution. A redesigned measurement and calibration framework provides substantially higher accuracy across a wider range of environments, with particularly improved performance in low salinity conditions. Sensor stabilisation time has been greatly reduced, enabling reliable readings much sooner after deployment or abrasion.
v20.1 Minor update to improve handling of outlier electrode readings
The sensor operates using two firmware components: Driver and Interface.
Due to processor supply variations, there are two types of Driver firmware (ATX and STM) and two types of Interface firmware (A and B).
It is important to upload the correct Driver and Interface firmware versions for your sensor.
The PCB Version shown on the anb_utils splash screen will indicate which Driver and Interface firmware versions are required.
Make sure you have Interface version I6 or above installed on your sensor before uploading new firmware.
If you do not have Interface version I6 or above, an upgrade to the bootloader must be carried out first. Instructions on how to do this are here
For further support please contact support@anbsensors.com