> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/extender-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/extender-manual/extender-quick-start/updating-firmware.md).

# Updating firmware

To ensure you have the latest firmware for your Extender device, you can perform a firmware update at any time.

To update your device's firmware:

1. [Install](https://www.emotiv.com/get-started/) and open EMOTIV App on your PC or laptop
2. Connect your Extender via USB to your computer. Please ensure it is powered on (green light on) and the microSD card is removed.
3. Click on the ![](https://lh4.googleusercontent.com/AGoW4m0r8llxdcJSIcT5LITkJ_3ZNw9eVdsiwT7SLABPy8coj9L1cAVUvwMNsblArTVc2Xj0gMTguWyu-2dk2BuiR5VksDW__r0j2Lyf4TcYDRDC2ZgXCc4jNDR1kC9gdvpAeBdX)  icon on the connected device panel on EMOTIV App to reveal options list
4. Select “Update firmware” from the drop down menu
5. Wait for the update to finish and success message to appear at the bottom of the app screen
6. Hold down the power button for 3s until the green light turns off.
7. Press the button again to turn back on your Extender and confirm that the clock is up to date.

Details on updating your headset's firmware to ensure it is compatible with the latest Extender firmware can be found [here](https://emotiv.gitbooks.io/updating-firmware/content/).

![](/files/-LIeRw-Nn4xpx8vwJ4X5)


---

# 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:

```
GET https://emotiv.gitbook.io/extender-manual/extender-quick-start/updating-firmware.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.