# Flash firmware with nRF Connect APP

Download nRF connect APP

{% embed url="<https://www.nordicsemi.com/Products/Development-tools/nrf-connect-for-mobile>" %}

Download dongle firmware

{% file src="/files/srU9lIpQzoVUXbXzX2bn" %}

Download Firmware files to your Phone from "nRF firmware download" Tab

Step 1

Turn keyboard off, press and HOLD 4 keys then turn keyboard on.&#x20;

<figure><img src="/files/zV5mTJUuupMiaxTJA32V" alt="" width="563"><figcaption><p>Ergo</p></figcaption></figure>

<figure><img src="/files/I9grJdd8OFOix81QErm2" alt="" width="563"><figcaption><p>Ergolite</p></figcaption></figure>

<figure><img src="/files/UZx8ngT9eo5kZoGntyPk" alt="" width="563"><figcaption></figcaption></figure>

Step 2

Open nRF Connect App, will see KCDFU in the Scanner tab, then connect it.

![](/files/s7yXoMYQ20fZhufng4Gh)![](/files/wLkLxAxmJ4Hs2tHhaKZO)

Step 3&#x20;

Click "Open Document Picker", select the file you downloaded earlier (Which Keyboard/side you have?) then click "Start".

![](/files/Nu92pF6s3BJ9X0bjn7VK)![](/files/tpYtXhmPcBHI4F1lU5CR)

Step 4

Waiting for the progress bar to reach 100%. Done! Do step 1-4 on the other side.

![](/files/KaUsE1pAQHzV7xnOaYaY)

Step 5\
\
Flash firmware on 2.4g wireless dongle(receiver), press and HOLD the DFU button then plug it.\
Do step 2,3,4.

<figure><img src="/files/XxnRPikFphA5VzcKJxOv" alt="" width="375"><figcaption></figcaption></figure>

<figure><img src="/files/InrIujxyKP90tiSlA2I6" alt="" width="375"><figcaption></figcaption></figure>


---

# Agent Instructions: 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://docs.keyclicks.ca/nrf-firmware-update-fix-connection-issues/flash-firmware-with-nrf-connect-app.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.