McCrometer Firmware Updates
This page provides a comprehensive record of firmware updates for the McCrometer FlowCom, ProComm GO, and ProComm Max devices. Each update includes detailed descriptions of enhancements, affected components, and patch notes.
Click on a specific product to view the improvements and fixes, and download the corresponding update package.
Quick Links
FlowCom | Version 1.2.2
Download File:
Release Date:
6/3/26
Patch Notes:
Added command to prevent modification of the totalizer via external commands (FLOW.TOTDIS).
Read command output:
- 0 – Totalizer modification commands operate normally (default)
- 1 – Totalizer modification commands are silently ignored
Write command input:
- Requires specific values to enable or disable this feature
Extended the UART buffer length to support longer strings received from the SmartTrax Mini when issuing the SD.LOG command
Updated initialization of the external UART device (SmartTrax) to attempt communication up to three times before failing
ProComm Go | Version 3.3.0
Download File:
Release Date:
5/8/26
Patch Notes:
Updated ADC configuration for coil current measurement to improve reading accuracy.
Updated SD logging logic to ensure data is logged correctly when operating on battery or AC/DC power.
ProComm Max Transmitter | Version 1.7.0
Download File:
Release Date:
9/21/26
Patch Notes:
- Moved the Totalizer setting from the Advanced Configuration menu to a dedicated screen.
- Updated terminology throughout the interface, replacing “Cal Coefficients” with “Cal Variables.”
- Added the SAMPLE.DMAX command.
- Added the ADMIN.PIN command to support Advanced Mode locking.
- Updated pulse output frequency logic to ensure consistent pulse widths and accurate pulse counts within each update window.
- Enhanced RTC initialization to prevent the system from hanging in the event of an RTC or clock failure.
- Updated the DOGL128 display driver to use a frame buffer, reducing unnecessary screen refreshes and minimizing display flashing observed in previous versions.
- Prevented the CAL.MAX (maximum flow value) setting from being configured to zero.
ProComm Max Converter | Version 1.7.0
Download File:
Release Date:
9/21/26
Patch Notes:
- Moved the Totalizer setting from the Advanced Configuration menu to a dedicated screen.
- Updated terminology throughout the interface, replacing “Cal Coefficients” with “Cal Variables.”
- Added the SAMPLE.DMAX command.
- Added the ADMIN.PIN command to support Advanced Mode locking.
- Updated pulse output frequency logic to ensure consistent pulse widths and accurate pulse counts within each update window.
- Enhanced RTC initialization to prevent the system from hanging in the event of an RTC or clock failure.
- Updated the DOGL128 display driver to use a frame buffer, reducing unnecessary screen refreshes and minimizing display flashing observed in previous versions.
- Prevented the CAL.MAX (maximum flow value) setting from being configured to zero.
Firmware Update Instructions with McCrometer Config Tool
Download File:
Release Date:
8/1/25
Patch Notes:
Instructions for updating McCrometer ProComm Max firmware
Archived Versions
Click to view
| Device | Version | Release Date | Patch Notes |
|---|---|---|---|
| ProComm Max Converter | 1.6.1 | 4/8/26 |
|
| ProComm Max Transmitter | 1.6.1 | 4/8/26 |
|
| FlowCom | 1.1.1 | 4/2/26 |
|
| ProComm Go | 2.9 | 3/24/25 |
|
| ProComm Max Transmitter | 1.5.2 | 8/21/25 |
|
| ProComm Max Converter | 1.5.3 | 2/2/26 |
|
| FlowCom | 1.1.0 | 3/3/26 |
|
| FlowCom | 1.0.7 | 6/20/25 |
|
| ProComm Max Converter | 1.5.2 | 8/21/25 |
|
| ProComm Max Transmitter | 1.5.1 | 7/23/25 |
|
| ProComm Max Converter | 1.5.1 | 7/23/25 |
|
| ProComm Max Converter | 1.4.2 | 4/22/25 |
|
| ProComm Max Transmitter | 1.4.11 | 6/24/25 |
|
| ProComm Max Transmitter | 1.4.2 | 4/22/25 |
|
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