> For the complete documentation index, see [llms.txt](https://support.powerio.com/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.powerio.com/hub/downloads/en/powerio-downloads/h1.m200-firmware.md).

# H1.M200

<figure><img src="/files/c9158877bf647f69a4bafd8f39e2bc65849f4a6f" alt="" width="375"><figcaption><p>H1.M200 Device</p></figcaption></figure>

### Current version - Firmware

<details>

<summary>5.0 - Firmware - <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-5.0.piop">Download</a></summary>

Release Date 22.07.2026

**New features and changes**

#### **Security**

* **Signed firmware packages**: Firmware updates (PIOP) have been signed since version 5.0 and are checked on the device before installation. Packages without a valid signature are rejected.
* **API keys for external systems**: Access to the device API via individually assignable and revocable API keys, without passwords in scripts or configuration files.

#### **LTE Modem**

* **LTE Modem Reset**: The LTE modem can now be reset and reinitialized via the web interface.
* **Improved reconnection**: More stable modem reinitialization in case of connection problems.

#### **powerIO Orbit connectivity (optional)**

* **powerIO Orbit connectivity**: Improved and more stable connection to powerIO Orbit with encrypted transmission.

**Bug fixes**

* **Onboard I/Os**: The onboard I/Os are reliably available again after restarting the API service.
* **Password reset code**: Security improvement in the generation of the password reset code.
* **Time server fallback**: Fallback to alternative time servers if the configured NTP server is unreachable.
* **Firmware upload**: Improved error handling when uploading firmware packages in the web interface.
* Bug fixes in the web interface and updates to system components

</details>

***

### Older versions - Firmware

<details>

<summary>4.4 - Firmware - <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-4.4.piop">Download</a></summary>

Release Date 12.09.2025

**Bug fixes and improvements**

* Full versioning

{% hint style="success" %}
For a detailed changelog, see version 4.3
{% endhint %}

</details>

<details>

<summary>4.3 - Firmware</summary>

Release Date 08.09.2025

**Bug fixes and improvements**

#### **Security**

* **HTTPS encryption** - Can optionally be activated with automatic certificates and custom certificates.
* **Flexible access control** - HTTP, HTTPS and SSH configurable individually.

**Wi-Fi dongle support**

* **Wi-Fi dongle support** - USB Wi-Fi adapters are detected immediately and can be used to securely access the device via the mobile app or web interface.

**powerIO Portal connectivity (optional)**

* **powerIO Portal connectivity -** Preparation for powerIO Portal integration with encrypted transmission.
* **powerIO Portal device registration -** Registration of powerIO devices for support purposes and device assignment.

**Optimizations**

* **Reduced memory usage** - 15% less RAM usage in idle operation.
* **Automatic recovery** - Crashed services restart automatically - the system continues running without intervention.

**Bug fixes**

* **DNS server applications** - Applications now receive DNS server changes without the application needing to be restarted
* **More stable USB connections** - No more connection dropouts under LTE modem load
* **Network interface bug fix** - In rare cases, the eth1 interface (in combination with an LTE modem) could fail. This has been fixed.
* Improvements to UPS monitoring for a stable shutdown.
* Bug fixes in the web interface and correction of typos

</details>

<details>

<summary>4.2 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-4.2.piop">Download</a></summary>

Release Date 24.03.2025

**Bug fixes and improvements**

* **Improved system stability** - File system checks and optimized container management implemented.
* **Faster system startup** - Optimized execution methods reduce startup time and memory usage.
* **Bug fix for package installation** - Problems fixed and installation process stabilized.

</details>

<details>

<summary>4.1 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-4.1.piop">Download</a></summary>

Release Date 31.01.2025

**Bug fixes and improvements**

* Compatibility for internal application restored by updated dependency package.

</details>

<details>

<summary>4.0 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-4.0.piop">Download</a></summary>

Release Date 28.01.2025

**Bug fixes and improvements**

* Update of system libraries

</details>

<details>

<summary>3.22 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.22.piop">Download</a></summary>

Release Date 14.11.2024

**Bug fixes and improvements**

* Bug fix for restarting. In some situations, the restart was not performed when it was triggered via the web interface.

</details>

<details>

<summary>3.20 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.20.piop">Download</a></summary>

Release Date 04.09.2024

**New features and changes**

* Performance optimization: The core functions were integrated into the main software, resulting in improved system performance.

**Bug fixes and improvements**

* The network connection at system startup was improved to avoid interruptions.
* A problem with updating configuration files was fixed, so version information is now always displayed correctly.
* A problem with the NTP client was fixed to ensure more accurate system time.
* Log file management was optimized to better use system resources.

</details>

<details>

<summary>3.10 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.10.piop">Download</a></summary>

Release Date 15.05.2024

**Bug fixes and improvements**

* Improvement in log recording and bug fix for a background service

</details>

<details>

<summary>3.9 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.9.piop">Download</a></summary>

Release Date 08.05.2024

**New features and changes**

* After uploading software packages, the user interface now updates itself to show you the unpacking progress.
* The handling of the mobile app has been improved through extended session and authentication options.
* With new settings in log file management, only relevant warning messages are now displayed, improving clarity.<br>

  <figure><img src="/files/022e661c4e79054a9082a30d548632275317bd5b" alt=""><figcaption></figcaption></figure>

**Bug fixes and improvements**

* We have added a network bridge to ensure that your network connections are maintained even during power outages.
* Access logs for certain API paths are now no longer stored, which protects your data even better.
* Settings for logging and log rotation have been optimized to improve system performance and use storage space more efficiently.

</details>

<details>

<summary>3.8 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.8.piop">Download</a></summary>

Release Date 22.12.2023

**New features and changes**

* Stability improvement during system startup.

**Bug fixes**

* Previously, when network settings were changed, the change was applied to all network interfaces. As a result, in the case of two network interfaces, an unaffected change led to very brief flickering.
* When uploading large applications, a timeout was shown even though there was no timeout.
* After uploading an application, the status no longer remains at 100% during unpacking. Instead, the user is shown that the application is being prepared. After that, the application can be installed as usual.

</details>

<details>

<summary>3.7 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.7.piop">Download</a></summary>

Release Date 06.11.2023

**New features and changes**

* Fast reconnection after connection loss without modem teardown
* Add package information for additional user apps

**Bug fixes**

* Modem drops the connection and can no longer reconnect
* Signal strength could occasionally not be retrieved
* Modem improvements - Reconnect in different states

</details>

<details>

<summary>3.6 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.6.piop">Download</a></summary>

Release Date 10.10.2023

**New features and changes**

* Control of analog values less than 255

**Bug fixes**

* Fix: DOs - conversion conditional checks - output is not set.
* Gateway can only be set when switching between DHCP and static
* Security patches for dependency packages

</details>

<details>

<summary>3.6 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.6.piop">Download</a></summary>

Release Date 10.10.2023

**New features and changes**

* Control of analog values less than 255

**Bug fixes**

* Fix: DOs - conversion conditional checks - output is not set.
* Gateway can only be set when switching between DHCP and static
* Security patches for dependency packages

</details>

<details>

<summary>3.4 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.4.piop">Download</a></summary>

Release Date 22.08.2023

**Bug fixes**

* Fixes the error where IPv6 is used instead of IPv4 for an LTE connection, even though this is stored as the preferred setting.

</details>

<details>

<summary>3.3 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-h1m200-firmware-3.3.piop">Download</a></summary>

Release Date 17.08.2023

**New features and changes**

* Unified web interface for all powerIO devices
* Support for LTE modem
* Support for the new hardware platform H1.M200 for existing user applications
* The onboard I/Os can **from firmware version 3.3** be used simultaneously by multiple applications. As a result, hardware access is no longer reserved exclusively for applications.\
  \
  For the user application CODESYS, the library ["POWERIOHW Hardware Library](/hub/downloads/en/codesys-hvac-downloads/poweriohw-hardware-library.md)" is to be used.

</details>


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