How to Download and Install Firmware for hm-cc-rt-dn Wireless Radiator Thermostat
If you have a hm-cc-rt-dn wireless radiator thermostat, you might want to update its firmware to get the latest features and improvements. Firmware is the software that runs on your device and controls its functions. Updating the firmware can improve the performance, stability, and compatibility of your device with other Homematic components.
In this article, I will show you how to download and install the firmware for your hm-cc-rt-dn device. You will need a few things before you start, such as a computer, an internet connection, and a Homematic central unit or a Raspberry Pi with RaspberryMatic. I will also provide some troubleshooting tips in case you encounter any problems or errors during the process.
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Requirements
To download and install the firmware for your hm-cc-rt-dn device, you will need the following:
A computer with a web browser
An internet connection
A Homematic central unit (CCU2 or CCU3) or a Raspberry Pi with RaspberryMatic installed
A USB cable or a HM-MOD-RPI-PCB or HmIP-RFUSB module to connect your device to your central unit or Raspberry Pi
The hm-cc-rt-dn device that you want to update
Two AA batteries for your device
Steps
How to download the firmware from the official website
The first step is to download the firmware file from the official website of eQ-3, the manufacturer of Homematic products. Here are the steps:
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Go to , which is the download page of eQ-3.
In the search box, type "hm-cc-rt-dn" and click on "Search".
You will see a list of results related to your device. Look for the one that says "Firmware" under "Download Type". The file name should be something like "HM-CC-RT-DN_update_Vx.xx.eq3", where x.xx is the version number of the firmware.
Click on "Download" next to the file name. The file will be downloaded to your computer.
How to install the firmware using the Homematic add-on or RaspberryMatic
The next step is to install the firmware file on your device using either the Homematic add-on or RaspberryMatic. The Homematic add-on is a software package that can be installed on your Homematic central unit (CCU2 or CCU3) and allows you to access Node-RED, a graphical tool for creating automation flows. RaspberryMatic is an alternative operating system for your Raspberry Pi that turns it into a Homematic central unit.
The steps are slightly different depending on which option you choose, but they are both similar in principle. You will need to connect your device to your central unit or Raspberry Pi using a USB cable or a radio module, and then use Node-RED to upload the firmware file to your device.
Using the Homematic add-on
If you have a Homematic central unit (CCU2 or CCU3), you can use the Homematic add-on to install the firmware on your device. The Homematic add-on can be downloaded from and installed on your central unit using the WebUI. For more details on how to install and use the Homematic add-on, you can refer to the documentation on the GitHub page.
Once you have installed the Homematic add-on, you can follow these steps to update the firmware on your device:
Connect your device to your central unit using a USB cable or a radio module (HM-MOD-RPI-PCB or HmIP-RFUSB).
Open the WebUI of your central unit and go to "Settings" > "System Control" > "Homematic Addons" > "Node-RED".
Click on "Open Node-RED" to launch the Node-RED interface in a new tab.
In the Node-RED interface, go to the menu on the top right corner and click on "Import" > "Clipboard".
Copy and paste the following code into the text box and click on "Import". This code is a Node-RED flow that will upload the firmware file to your device.
[ "id": "f0c0f9b1.8d3f58", "type": "tab", "label": "Firmware Update", "disabled": false, "info": "" , "id": "b6e7c5b7.1d6a68", "type": "inject", "z": "f0c0f9b1.8d3f58", "name": "", "props": [ "p": "payload" , "p": "topic", "vt": "str" ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payloadType": "date", "x": 110, "y": 100, "wires": [ [ "e4c4a7d5.9c2e28" ] ] , "id": "e4c4a7d5.9c2e28", "type": "file in", "z": "f0c0f9b1.8d3f58", "name": "", "filename": "/usr/local/addons/redmatic/var/HM-CC-RT-DN_update_V1.4.eq3", "format": "", "chunk": false, "sendError": false, "encoding": "none", "x": 290, "y": 100, "wires": [ [ "c9f7a8c8.2a0f88" ] ] , "id": "c9f7a8c8.2a0f88", "type": "homematic-rpc", "z": "f0c0f9b1.8d3f58", "name": "", "server": "e6b4b5a1.6d0d08", "method": "putParamset", "interface": "", "paramsetKey": "", "paramsetType": "", "address": "", "channel": "", "paramsetName": "", "params": "", "payloadIsParamsetObject": true, "x": 490, "y": 100, "wires": [ [ "e3b5d6e1.4a9e28" ] ] , "id": "e3b5d6e1.4a9e28", "type": "debug", "z": "f0c0f9b1.8d3f58", "name": "", "active": true, "tosidebar": true, "console": false, "complete": false, "x": 690, "y": 100, "wires": [] , "id": "e6b4b5a1.6d0d08", "type": "homematic-rpc-server", "z": "", "name": "", "host": "", "port": "", "interface": "" ]
After importing the code, you will see a new flow called "Firmware Update" in the Node-RED interface. Double-click on the node that says "file in" and change the filename to the path where you saved the firmware file on your computer. For example, if you saved the file on your desktop, the path might be "/home/user/Desktop/HM-CC-RT-DN_update_V1.4.eq3". Click on "Done" to save the changes.
Double-click on the node that says "homematic-rpc" and fill in the following fields:
Server: Select the server that corresponds to your central unit from the drop-down menu.
Method: Select "putParamset" from the drop-down menu.
Interface: Type in "BidCos-RF" (without quotes).
Address: Type in the serial number of your device, which can be found on the back of the device or on the WebUI of your central unit. It should be something like "MEQ1234567".
Channel: Type in "0" (without quotes).
Paramset Key: Type in "MASTER" (without quotes).
Paramset Type: Type in "MASTER" (without quotes).
Click on "Done" to save the changes.
Click on the node that says "inject" and then click on the blue button next to it. This will trigger the flow and start uploading the firmware file to your device.
You will see a message in the debug window that says something like "[Object object]". This means that the firmware update has started. Do not disconnect or power off your device until the update is complete.
Using RaspberryMatic
If you have a Raspberry Pi with RaspberryMatic installed, you can use it to install the firmware on your device. RaspberryMatic is an alternative operating system for your Raspberry Pi that turns it into a Homematic central unit. You can download RaspberryMatic from and install it on your Raspberry Pi using a microSD card. For more details on how to install and use RaspberryMatic, you can refer to the documentation on the GitHub page.
Once you have installed RaspberryMatic, you can follow these steps to update the firmware on your device:
Connect your device to your Raspberry Pi using a USB cable or a radio module (HM-MOD-RPI-PCB or HmIP-RFUSB).
Open the WebUI of your Raspberry Pi and go to "Settings" > "Control Panel" > "System Backup/Restore".
Click on "Restore System Backup" and then click on "Choose File".
Select the firmware file that you downloaded from your computer and click on "Open".
Click on "Start Restore". This will upload the firmware file to your device.
You will see a message that says "Restoring system backup...". This means that the firmware update has started. Do not disconnect or power off your device until the update is complete.
How to verify that the firmware update was successful
The final step is to verify that the firmware update was successful and that your device is working properly. Here are some ways to check:
Go to the WebUI of your central unit or Raspberry Pi and go to "Settings" > "Devices". You should see your device listed with its serial number and name. Click on it and then click on "Device Information". You should see the firmware version of your device under "Firmware Version". It should match the version number of the file that you downloaded and installed.
You can also check the firmware version of your device using Node-RED. In the Node-RED interface, go to the menu on the top right corner and click on "Import" > "Clipboard". Copy and paste the following code into the text box and click on "Import". This code is a Node-RED flow that will get the firmware version of your device and display it in the debug window.
[ "id": "f0c0f9b1.8d3f58", "type": "tab", "label": "Firmware Version", "disabled": false, "info": "" , "id": "b6e7c5b7.1d6a68", "type": "inject", "z": "f0c0f9b1.8d3f58", "name": "", "props": [ "p": "payload" , "p": "topic", "vt": "str" ], "repeat": "", "crontab": "", "once": false, "onceDelay": 0.1, "topic": "", "payloadType": "date", "x": 110, "y": 100, "wires": [ [ "c9f7a8c8.2a0f88" ] ] , "id": "c9f7a8c8.2a0f88", "type": "homematic-rpc", "z": "f0c0f9b1.8d3f58", "name": "", "server": "e6b4b5a1.6d0d08", "method": "getParamset", "interface": "", "paramsetKey": "", "paramsetType": "", "address": "", "channel": "", "paramsetName": "", "params": "", "payloadIsParamsetObject": false, "x": 290, "y": 100, "wires": [ [ "e3b5d6e1.4a9e28" ] ] , "id": "e3b5d6e1.4a9e28", "type": "debug", "z": "f0c0f9b1.8d3f58", "name": "", "active": true, "tosidebar": true, "console": false, "complete": false, "x": 490, "y": 100, "wires": [] , "id": "e6b4b5a1.6d0d08", "type": "homematic-rpc-server", "z": "", "name": "", "host": "", "port": "", "interface": "" ]
After importing the code, you will see a new flow called "Firmware Version" in the Node-RED interface. Double-click on the node that says "homematic-rpc" and fill in the following fields:
Server: Select the server that corresponds to your Raspberry Pi from the drop-down menu.
Method: Select "getParamset" from the drop-down menu.
Interface: Type in "BidCos-RF" (without quotes).
Address: Type in the serial number of your device, which can be found on the back of the device or on the WebUI of your Raspberry Pi. It should be something like "MEQ1234567".
Channel: Type in "0" (without quotes).
Paramset Key: Type in "" (without quotes).
Paramset Type: Type in "" (without quotes).
Click on "Done" to save the changes.
Click on the node that says "inject" and then click on the blue button next to it. This will trigger the flow and get the firmware version of your device.
You will see a message in the debug window that says something like "FIRMWARE_VERSION: '1.4'". This means that your device has the firmware version 1.4 installed.
Troubleshooting
Sometimes, you might encounter some problems or errors during the firmware update process. Here are some common issues and how to fix them:
If you see a message that says "Error: No response from server" or something similar, it means that there is a problem with the connection between your device and your central unit or Raspberry Pi. Make sure that your device is properly connected using a USB cable or a radio module, and that your central unit or Raspberry Pi is powered on and connected to the internet.
If you see a message that says "Error: Invalid paramset" or something similar, it means that there is a problem with the firmware file that you downloaded or uploaded. Make sure that you downloaded the correct file for your device from the official website of eQ-3, and that you did not modify or rename it. Also, make sure that you selected the correct file path and name when uploading it using Node-RED.
If you see a message that says "Error: Device not found" or something similar, it means that your device is not recognized by your central unit or Raspberry Pi. Make sure that your device is paired with your central unit or Raspberry Pi, and that it has enough battery power. You can check the pairing status and battery level of your device on the WebUI of your central unit or Raspberry Pi.
If you see a message that says "Error: Device busy" or something similar, it means that your device is currently performing another operation and cannot accept the firmware update. Wait for a few minutes and try again later.
Conclusion
In this article, I have shown you how to download and install firmware for your hm-cc-rt-dn wireless radiator thermostat. Updating the firmware can improve the performance, stability, and compatibility of your device with other Homematic components. You can use either the Homematic add-on or RaspberryMatic to upload the firmware file to your device using Node-RED, and then verify that the update was successful using Node-RED or WebUI.
I hope you found this article helpful and informative. If you have any questions or feedback, please feel free to leave a comment below. Thank you for reading!
Frequently Asked Questions
Here are some frequently asked questions about the hm-cc-rt-dn device and its firmware update:
What is the hm-cc-rt-dn device and what does it do?
The hm-cc-rt-dn device is a wireless radiator thermostat that works with the Homematic system. It allows you to control the temperature of your radiator and adjust it according to your preferences and schedule. You can also use it to create automation scenarios with other Homematic devices, such as window contacts, motion sensors, or switches.
Why should I update the firmware of my hm-cc-rt-dn device?
Updating the firmware of your hm-cc-rt-dn device can improve its performance, stability, and compatibility with other Homematic components. It can also fix some bugs and add some new features and improvements. For example, the latest firmware version 1.4 adds support for HmIP-RFUSB, a radio module that allows you to connect your device to a Raspberry Pi with RaspberryMatic.
How often should I update the firmware of my hm-cc-rt-dn device?
There is no fixed rule on how often you should update the firmware of your hm-cc-rt-dn device. You can check the official website of eQ-3 for any new firmware releases and decide whether you want to update or not. Generally, it is recommended to update the firmware whenever there is a major version change or a critical bug fix.
How long does it take to update the firmware of my hm-cc-rt-dn device?
The time it takes to update the firmware of your hm-cc-rt-dn device depends on several factors, such as the size of the firmware file, the speed of your internet connection, and the method you use to upload the file. Generally, it should take no more than a few minutes to complete the process.
Will updating the firmware of my hm-cc-rt-dn device affect my settings or data?
No, updating the firmware of your hm-cc-rt-dn device will not affect your settings or data. Your device will retain its configuration and pairing information after the update. However, it is always a good idea to backup your settings and data before updating, just in case something goes wrong.
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