# Firmware Lifecycle

# Change Log

# New Features

  • UCM firmware version 1.5.0 release

  • Added Safety Warnings

  • Added DC-DC electrolysers support

  • Added Dryer Control Network

# Bug Fixes

  • Fix for low input water pressure (FX_30)

  • DHCP improvements


Make sure you have physical access to the device before starting the update process.

After firmware upgrade the electrolyser must be powered off and turn back on.

# Compatibility Matrix

Please carefully check the compatibility matrix for the 1.5.0 firmware version with the previous version.


  • C - fully compatible;
  • NC - not compatible;
  • PC - party compatible, check additional notes.
OTA Upgradable C
Modbus Communication Backward Compatibility C
Configuration C
Rollback C


If Site has Enapter Gateway it needs to be updated to version 1.8.9 or higher.

# Functional Depreciation Statements

  • Warning WS_20 is deprecated. Instead of using it for checking that Electrolyser reached Max Pressure it is recommended to use input register #1200 (4 = Stand-By (Max Pressure)).

# Modbus Compatibility

  • Input registers #14 (Cabinet (Chassis) Serial Number) and #1000 (Stack Serial Number) are deprecated. Instead use holding registers #4026 (Enapter Chassis Serial Number) and #4376 (Enapter Stack Serial Number).

# Known Bugs List

The list below contains the most important problems in the firmware and their solutions.

  • The system stops calculation of total produced H2 after 524288.

    Solution: Update the firmware to version 1.6.0 or above. To update your device, navigate to Device Info -> Firmware and press the Check for Updates button. If you do not see an available update, you can contact our support team at support@enapter.com.