> 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/t1.b100-firmware.md).

# T1.B100

Firmware updates for the powerIO Box T1.B100

<figure><img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FnVvryE3MXxzwO11GtR7n%2FpowerIO%20Box.JPG?alt=media&amp;token=b44c3dda-3e97-4147-b8cd-5130d3fd6aae" alt="" width="375"><figcaption><p>T1.B100 powerIO Box</p></figcaption></figure>

### Current Version - Firmware

<details>

<summary>5.1 - Firmware - <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-5.1.piop" class="button primary" data-icon="arrow-down-to-line">Download</a></summary>

Release Date 06.08.2026

**New features and changes**

* **powerIO Orbit**: The web interface consistently uses the term powerIO Orbit instead of powerIO Portal.

</details>

***

### Current Version - Bootloader

{% hint style="info" %}
With Bootloader < 0.8, startup problems may rarely occur after updates; turning it off and on again fixes this, the restart can take several minutes\
\
The Bootloader file can be installed independently of the firmware.
{% endhint %}

<details>

<summary>0.8 - Bootloader <a href="https://dl.powerio.com/downloads/powerIO-t1b100-bootloader-0.8.piop">Download</a></summary>

Release Date 08.09.2025

**Bug fixes and improvements**

* With Bootloader versions < 0.8, in rare cases a firmware update can cause the system not to start. If this happens, the device must be switched off and on again. This startup can take several minutes, as the update is carried out again here.\
  \
  With this version, this issue has been fixed. The Bootloader file can be installed independently of the firmware.

</details>

***

### Older versions - Firmware

<details>

<summary>5.0 - Firmware - <a href="https://dl.powerio.com/downloads/powerIO-t1b100-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.

#### **Serial communication and Modbus**

* **Optimized Modbus communication**: Interframe timing according to the Modbus specification and elimination of a race condition for even more stable parallel queries.

#### **powerIO Orbit integration (Optional)**

* **powerIO Orbit integration**: Improved and more stable integration with powerIO Orbit with encrypted transmission.

**Bug fixes**

* **Onboard I/Os**: The onboard I/Os are reliably available again after a restart of the API service.
* **Password reset code**: Security improvement in the generation of the password reset code.
* **Time server fallback**: Fallback to alternative time servers when 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>

<details>

<summary>4.4 - Firmware - <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-4.4.piop">Download</a></summary>

Release Date 12.09.2025

**Bug fixes and improvements**

* Complete 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 be optionally enabled with automatic certificates and custom certificates.
* **Flexible access control** - HTTP, HTTPS and SSH individually configurable.

**Serial communication and Modbus**

* **Modbus speed 3x -** Due to buffer optimization, Modbus RTU queries are up to 3x faster! Depending on the connected Modbus device and baud rate.
* **Automatic reconnection** - Automatic recovery after connection interruptions.
* **Parallel query optimization (Serial)** - Queries are now fully performed in parallel per port.

**powerIO Portal integration (Optional)**

* **powerIO Portal integration -** 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 even without intervention.

**Bug fixes**

* **DNS server applications** - Applications now receive DNS server changes without the application needing to be restarted
* **Fixing memory leaks** - In rare cases, memory leaks occurred; this was fixed through improved thread handling.
* **Fixing long restart times** - When a restart was initiated, it could take up to 100 seconds before it was triggered.
* Bug fixes in the web interface and correction of typos

</details>

<details>

<summary>4.2 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-4.2.piop">Download</a></summary>

Release Date 24.03.2025

**Bug fixes and improvements**

* **Wi-Fi dongle function extension**- Network usage possible in Network mode or Application mode.
* **Expanded Modbus functionality** - Faster port scanning and customizable timeout settings added.
* **Automatic activation of software packages** - Software is activated after installation without manual intervention.
* **Improved system stability** - Filesystem checks and optimized container management implemented.
* **Accelerated system startup** - Optimized execution methods reduce startup time and memory usage.
* **Expanded Modbus log data** - Client source information added to trace data for better debugging.
* **Fix for package installation** - Issues fixed and installation process stabilized.

</details>

<details>

<summary>4.1 - Firmware</summary>

Release Date 31.01.2025\
WARNING: Critical bug - Modbus timeout fixed at 50ms - use a newer version!

**Bug fixes and improvements**

* Compatibility for internal application restored through an updated dependency package.

</details>

<details>

<summary>4.0 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-4.0.piop">Download</a></summary>

Release Date 28.01.2025

**Bug fixes and improvements**

* Updated [Modbus Stack](/hub/powerio-r-system/en/t1.b100/feldbus-protokolle/modbus.md#besonderheiten), with automatic list handling and optimized performance
* Additional functions such as [Modbus Trace Log](/hub/powerio-r-system/en/t1.b100/feldbus-protokolle/modbus.md#modbus-log) for error analysis
* Addition of [Modbus Test](/hub/powerio-r-system/en/t1.b100/feldbus-protokolle/modbus.md#modbus-test) with missing FCs and datatype extensions
* Extension to[ Use serial ports in user applications](/hub/powerio-r-system/en/t1.b100/feldbus-protokolle/application.md#auswahl-fur-application-modus) to be able to.

</details>

<details>

<summary>3.22 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.22.piop">Download</a></summary>

Release Date 14.11.2024

**Bug fixes and improvements**

* Fix for restart. In some situations, the restart was not executed when it was initiated via the web interface.

</details>

<details>

<summary>3.21 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.21.piop">Download</a></summary>

Release Date 10.09.2024

**Bug fixes and improvements**

* Fix for a dependency package for serial-transparent mode

**Info**\
\
If firmware version 3.20 was previously used and there is not enough storage space, the application "Internal Stack - Transparent mode" must be restarted.

<img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FxRbiXExmZmj8OSXddC1m%2FScreenshot%202024-09-10%20at%2021.13.38.png?alt=media&amp;token=66b9116c-92e4-41e2-9b8a-1f8b0f53958d" alt="" data-size="original">

</details>

<details>

<summary>3.20 - Firmware</summary>

Release Date 04.09.2024

**Info**

*Please use firmware version 3.21. This version fixes a critical issue that occurred in version 3.20. This change applies exclusively to the T1.B100 device.*

**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 during system startup was improved to avoid interruptions.
* An issue when updating configuration files was fixed so that version information is now always displayed correctly.
* An issue with the NTP client was fixed to ensure more accurate system time.
* The Modbus integration was improved to reduce interruptions during system changes.
* The management of log files was optimized to make better use of system resources.
* LTE stability improvements

</details>

<details>

<summary>3.10 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.10.piop">Download</a></summary>

Release Date 15.05.2024

**Bug fixes and improvements**

* Improvement in log recording and fix for a background service

</details>

<details>

<summary>3.9 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.9.piop">Download</a></summary>

Release Date 08.05.2024

**New features and changes**

* Wi-Fi Dongle support for the new powerIO v2 app
* After uploading software packages, the user interface now updates itself automatically to show you the unpacking progress.
* The handling of the mobile app was improved through extended session and authentication options.
* Through new settings in log file management, only relevant warning messages are now displayed, which improves clarity.\\\\

  <figure><img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FBsAGLhtwZVIlUCyDCdUZ%2FScreenshot%202024-05-08%20at%2012.05.04.png?alt=media&amp;token=30991cf0-b68c-4fe6-9826-abb6430c95ff" alt=""><figcaption></figcaption></figure>

**Bug fixes and improvements**

* We added a network bridge to ensure that your network connections are maintained even during power outages.
* Access logs for certain API paths are no longer stored, which protects your data even better.
* Logging and log rotation settings were 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-t1b100-firmware-3.8.piop">Download</a></summary>

Release Date 22.12.2023

**New features and changes**

* Preparation for the new fieldbus protocol BACnet
* Stability improvement during system startup

**Bug fixes**

* Previously, when network settings were changed, the change was applied to all network interfaces. This caused, in the case of two network interfaces, a short flicker for the unaffected change.
* When uploading large applications, a timeout was displayed even though there was no timeout.
* After uploading an application, the status during unpacking no longer remains at 100%. Instead, the user is shown that the application is being prepared. The application can then be installed as usual.

</details>

<details>

<summary>3.7 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.7.piop">Download</a></summary>

Release Date 06.11.2023

**New features and changes**

* Fast reconnection after connection loss without tearing down the modem
* Add package information for additional user apps

**Bug fixes**

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

</details>

<details>

<summary>3.6 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.6.piop">Download</a></summary>

Release Date 10.10.2023

**Bug fixes**

* 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-t1b100-firmware-3.4.piop">Download</a></summary>

Release Date 22.08.2023

**Bug fixes**

* Fixes the bug where IPv6 is used instead of IPv4 in an LTE connection, even though this is set as the preferred setting.

</details>

<details>

<summary>3.3 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.3.piop">Download</a></summary>

Release Date 17.08.2023

**New features and changes**

* Unified web interface for all powerIO devices
* Preparations for LTE modem as an expansion card

</details>

<details>

<summary>3.2 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.2.piop">Download</a></summary>

Release Date 31.07.2023

**New features and changes**

* Visual feedback when threshold values for storage usage are exceeded.

  <div align="left"><figure><img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FgGPV8owDNBttOqpGuD28%2F255903671-a224f9e2-6f05-465d-bb3d-149f285c4229.gif?alt=media&amp;token=8524673a-08c7-479e-8bf2-6df5ee5fbcec" alt="" width="375"><figcaption><p>Threshold monitoring of system values</p></figcaption></figure></div>
* Visual feedback when threshold values for relevant performance data are exceeded.\\\\

  <div align="left"><figure><img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FrEW2p8fLQFSvSvFuI3bq%2FBildschirmfoto%202023-07-31%20um%2014.28.43.png?alt=media&amp;token=6d8e6182-803a-48dd-a810-75c797a4a00f" alt="" width="375"><figcaption><p>Threshold monitoring of power values</p></figcaption></figure></div>
* Cross-page global "Advanced Mode" for an expanded view of information.\\\\

  <div align="left"><figure><img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2Fm5tdJ63WPe64kVkLhvMu%2FBildschirmaufnahme%202023-07-31%20um%2014.35.56.gif?alt=media&amp;token=1dc04316-09aa-4fdd-b258-a30fe66ac4dd" alt=""><figcaption><p>Enabling/disabling "Advanced Mode"</p></figcaption></figure></div>
* Additional log information added to the "Diagnostic File".
* Version display limited to "Firmware Version", as this is the only relevant version for the end user.
* Installed user applications that redirect to an application website are marked with a "Link" icon.\\\\

  <div align="left"><figure><img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FVarWErkwlnkCxKJhoYRH%2FBildschirmfoto%202023-07-31%20um%2014.44.33.png?alt=media&amp;token=3b707172-2795-4a6e-8c19-1596a3b916e0" alt="" width="249"><figcaption><p>Buttons with "Link" and "Settings"</p></figcaption></figure></div>

**Bug fixes**

* In a critical error state, e.g. due to a kernel panic, an automatic restart is performed.
* Fix for logging Device Manager requests.
* Active tabs under user applications are now highlighted.\\\\

  <div align="left"><figure><img src="https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FrSldHb4q4R2Pn3U9Mlqy%2FBildschirmaufnahme%202023-07-31%20um%2014.48.40.gif?alt=media&amp;token=ae32b5ce-8ddd-4876-af3b-7f3dad1f60c0" alt="" width="375"><figcaption><p>Active TAB display</p></figcaption></figure></div>
* Buttons for "Extended Port" are now in a uniform style.
* A display error during the active "Firmware Update" was fixed.

</details>

<details>

<summary>3.1 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-t1b100-firmware-3.1.piop">Download</a></summary>

Release Date 01.07.2023

**New features and changes**

* Support for new user applications
* If applications are in the uploaded area and installed, they are retained during subsequent firmware updates (Backup & Restore).
* Installed applications are now displayed dynamically in the navigation bar. Different configurations can be made here depending on the application.
* Configuration files of applications, e.g. CODESYS, can be edited in the integrated file explorer.
* Adjustment of the dashboard web interface with additional information
* Parallel upload of applications possible
* Preparations for support of an expansion card for an LTE modem.
* Preventing user application downgrades. The package must be uninstalled first. Afterwards, an older version can be installed.
* Extensions for remote update with the Device Manager

**Bug fixes**

* Fix for connecting expansion cards
* Stability improvement of the UPS
* Stability improvement of the measured values for 24 volt power supply
* Fix for target device selection. From firmware >= 3.0, only matching firmware versions for the respective target system can be installed.
* Fix for a display error in the Modbus test overview (date was displayed incorrectly).
* Preventing simultaneous installation processes, which could previously lead to a conflict.
* Missing timestamps in the diagnostic file were added
* Security patches for dependency packages

</details>

<details>

<summary>2.22 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-b1-firmware_v2.22.piop">Download</a></summary>

Release Date 05.12.2022

**New features and changes**

* The number of connectable devices per serial port was increased from 10 devices to 32 devices.

</details>

<details>

<summary>2.21 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-b1-firmware_v2.21.piop">Download</a></summary>

Release Date 06.04.2022

**New features and changes**

* The number of connectable devices per serial port was increased from 4 devices to 10 devices.
* The diagnostic file can now be *Settings -> Diagnostic* downloaded.

  ![](https://1006137389-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F0iNqm20Eubny3McJVgbJ%2Fuploads%2FmQA3uLUFdJshF18Lm9ZO%2Fchangelog-diagnostic-download.png?alt=media\&token=afaa2686-21a9-45ea-888d-bea25306b450)
* The diagnostic file is for evaluating error diagnostics by powerIO support. The file cannot be evaluated by the user themselves.

**Bug fix**

* Restart during power failure optimized.

</details>

<details>

<summary>2.20 - Firmware <a href="https://dl.powerio.com/downloads/powerIO-b1-firmware_v2.20.piop">Download</a></summary>

**New features and changes**

* LED test added to the diagnostics page.

**Bug fix**

* Stability improvements during firmware update.

</details>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://support.powerio.com/hub/downloads/en/powerio-downloads/t1.b100-firmware.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.