# Firmware Lifecycle
Note
Make sure you have physical access to the device before starting the update process.
Warning
Do not power off the device during the firmware update.
# Change Log
# New Features
- Electrolyser Web GUI: added possibility to control and monitor WT 2.1.
- Electrolyser Modbus TCP: added holding register #6200 to read WT 2.1 status.
- Electrolyser Modbus TCP: added holding register #6202 to read WT 2.1 water level.
- Electrolyser Modbus TCP: added holding register #6204 to read WT 2.1 inlet temperature.
- Electrolyser Modbus TCP: added holding register #6206 to read WT 2.1 tank temperature.
- Electrolyser Modbus TCP: added holding register #6208 to read WT 2.1 conductivity.
- Electrolyser Modbus TCP: added holding register #6210 to read WT 2.1 pump current.
- Electrolyser Modbus TCP: added holding register #6220 to read WT 2.1 UCM uptime.
- Electrolyser Modbus TCP: added holding register #6222 to send a command to WT 2.1 (the list of possible command can be found in Electrolyser 2.1 Modbus TCP Communication Interface)
- Added DCN/IDCN support.
- Added Factory Settings Reset.
- Support for new hardware. WT 2.1 product code: WTM21A5V03.
# Compatibility Matrix
Please carefully check the compatibility matrix for the 1.3.0 firmware version with the previous version.
Legend:
- C - fully compatible;
- NC - not compatible;
- PC - party compatible, check additional notes.
| 1.2.1 | |
|---|---|
| OTA Upgradable | C |
| Rollback | C |
# Known Bugs List
The list below contains the most important problems in the firmware and their solutions.