> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/win-gateway-installation-manual/gateway-configuration/gateway-firmware-upgrade.md).

# Gateway firmware upgrade

To upgrade the gateway firmware, click “System Configuration”->”Network”.

Click “CLICK HERE” link on the bottom of the screen in the row:

“To upload new firmware, <mark style="color:blue;">CLICK HERE</mark>. The current firmware version is 1.xx. Firmware may be uploaded over the network connection using HTTP. ..”

<figure><img src="/files/3kvbTTTWw0gFgqOvLstz" alt=""><figcaption></figcaption></figure>

Select the new firmware image.

<figure><img src="/files/fYr7pMRIzM7r8GOqC2fR" alt=""><figcaption></figcaption></figure>

The WIN gateway firmware versions can be downloaded from Onedrive \ICU Dokument - Documents\Software\WIN\NWINGW Firmware.

Version 1.40 can be downloaded from [ ICUController\_Firmware\_v1.40 (added support for 4-20mA and 0-10V (NWIN004 and NWIN005)).zip](https://icuscandinavia060.sharepoint.com/:u:/s/ICUDokument/Eb5r4fJog5NDmvpf73gnoagBpT6625Z2e1EbZtIl_V5kjQ?e=wIFEwt)

<figure><img src="/files/cgdlNcugBS57ITlRbLRu" alt=""><figcaption></figcaption></figure>

Click “Upload”.

<figure><img src="/files/7n5v8tO9NTPmQaN5QSbi" alt=""><figcaption></figcaption></figure>

The upload progress shall be shown in the Status field.

<figure><img src="/files/NhqKaVLv3KTRkUTjTKfn" alt=""><figcaption></figcaption></figure>

Follow the instructions on screen.


---

# 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://help.boomerang3.com/win-gateway-installation-manual/gateway-configuration/gateway-firmware-upgrade.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.