# Firmware Lifecycle
# Change Log
UCM firmware version 1.2.1 release
Added Modbus State Registers
Fixed Incorrect Command Statuses
Updating to version 1.2.1 causes EL 2.1 to fall into an error, which means the need to configure Blowdown and Maintenance parameters.
Please contact Enapter Support Team to do that.
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 compatibility matrix for 1.2.1 version of the firmware with other firmwares
- C - fully compatible;
- NC - not compatible;
- PC - party compatible, check additional notes.
|Modbus Communication Backward Compatibility||C|
# Functionality Deprication Statements
# Modbus Compatibility
# Known Bugs List
The list below contains the most important problems in the firmware and their solutions.
MAC address of network card is set to 00:80:E1:00:00:01.
Solution: Update EL 2.1 firmware to version 1.2.1-fix2 or higher.
MAINTENANCE MODE ON in Error mode is not possible using Enapter Mobile Application.
Solution: MAINTENANCE MODE ON can be enabled using Enapter Cloud.
ROLLBACK VOLATILES after WRITE VOLATILE VARIABLES is not possible.
Solution: Bug will be fixed in the next version of firmware.
Fan F103A turns off after exit from Maintenance Mode.
Reboot electrolyser using cloud (find the device in Enapter Cloud and execute Reset command (Commands > Electrolyser > Reset) or do system power restart (turn off it and restore power back).
Reboot electrolyser using Mobile App.