# Firmware Lifecycle
It is recommended to update the device in the IDLE mode without receiving and executing any commands from Modbus, Enapter Cloud, Enapter Mobile App or others.
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.
Do not power off the device during the firmware update.
Remove Dryer Control Network before updating the firmware.
If Site has Enapter Gateway it needs to be updated to version 1.8.9 or higher.
# Change Log
# New Features
UCM firmware version 1.5.1 release
Added Dryer Control Commands
Added Multiple Modbus Masters Support
# Compatibility Matrix
Please carefully check the compatibility matrix for the 1.5.1 firmware version with the previous version.
- C - fully compatible;
- NC - not compatible;
- PC - party compatible, check additional notes.
|Modbus Communication Backward Compatibility||C|
# 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
Firmwareand press the
Check for Updatesbutton. If you do not see an available update, you can contact our support team at email@example.com.
OTA does not finish successful to 1.5.1 without breaker.
Solution: After completed OTA update you need to manually switch off and on the breaker on the front panel of the electrolyser.