> For the complete documentation index, see [llms.txt](https://key4.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://key4.hideez.com/guide-for-hideez-key/service-operations/firmware-update-through-web.md).

# Firmware update through Web

You can update Firmware on your Hideez Key 4 through the web:

### Web updates through Bluetooth: 

{% hint style="info" %}
This method is compatible with PCs on Windows operating systems. 
{% endhint %}

1. Pair Hideez Key to your PC via Bluetooth.
2. Open the [**Hideez Firmware Update web service.**](https://update.hideez.com/FW_Web_update_app/RELEASE/?advanced=true)
3. Click the button “Update over BLE”.
4. Select your Hideez Key in the window that appears and click **“Connect.”**

<figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2FQDXFec35nobTKCz3LV0V%2FScreenshot_2.jpg?alt=media&amp;token=f0447f39-0b49-47d1-afbb-8bafb90b34ff" alt="" width="416"><figcaption></figcaption></figure>

5. Choose “Use currently available version for your device: 4.3.XX” and click **“Start update.”**

<figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2Fxgcwv9Ruh6Qe1ui8Lwjz%2FScreenshot_3.jpg?alt=media&amp;token=0b25df04-9800-45e3-9631-0d4ef787f3cc" alt="" width="551"><figcaption></figcaption></figure>

{% hint style="info" %}
In some cases, you may need to install a specific firmware version. To do this, select "**Load firmware from the file**." Wait for the firmware installation to complete.
{% endhint %}

6. Wait for the firmware installation to complete.

<div><figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2F2vj1Kv1LiRTCUKHHTgX2%2FScreenshot_6.jpg?alt=media&amp;token=669366d6-f043-4cf4-9761-37adae7b3116" alt=""><figcaption></figcaption></figure> <figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2F97sIiYp6EXlDc3DnqE18%2FScreenshot_7.jpg?alt=media&amp;token=cb0f74c6-a191-4e6f-aca6-cdd09e5c2929" alt=""><figcaption></figcaption></figure></div>

### Web updates through USB:

{% hint style="info" %}
Please note, that updating over USB is possible only with Hideez Key 4 with **Bootloader version 4.4.9:**

{% endhint %}

<figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2FusaowPh9Ce3bW9UPqtnU%2FScreenshot_1.jpg?alt=media&amp;token=5331cb33-db63-429e-830f-5503c70f4250" alt=""><figcaption></figcaption></figure>

#### To update the firmware on your Hideez Key to the latest version, follow these steps:

1. Open the [**Hideez Firmware Update web service.**](https://update.hideez.com/FW_Web_update_app/RELEASE/?advanced=true)
2. Connect your Hideez Key to your computer using a Micro USB port.
3. Select “**Update over USB**.”

<figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2FmaWAyQ5ruHekNDGwAybj%2Fimage.png?alt=media&amp;token=f929fb78-c001-4ffd-a796-f1cc775b4336" alt="" width="563"><figcaption></figcaption></figure>

{% hint style="warning" %}
**Please, notice, that you have to use a micro USB cable that supports data transfer not only charging. Otherwise, you can not install firmware.**
{% endhint %}

4. Select your Hideez Key in the window that appears and click **"Connect."**

<figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2FQDXFec35nobTKCz3LV0V%2FScreenshot_2.jpg?alt=media&amp;token=f0447f39-0b49-47d1-afbb-8bafb90b34ff" alt="" width="416"><figcaption></figcaption></figure>

5. Choose “Use currently available version for your device: 4.3.XX” and click **“Start update.”**

<figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2Fxgcwv9Ruh6Qe1ui8Lwjz%2FScreenshot_3.jpg?alt=media&amp;token=0b25df04-9800-45e3-9631-0d4ef787f3cc" alt="" width="551"><figcaption></figcaption></figure>

{% hint style="info" %}
In some cases, you may need to install a specific firmware version. To do this, select "**Load firmware from file**." Wait for the firmware installation to complete.
{% endhint %}

6. Wait for the firmware installation to complete.

<div><figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2F2vj1Kv1LiRTCUKHHTgX2%2FScreenshot_6.jpg?alt=media&amp;token=669366d6-f043-4cf4-9761-37adae7b3116" alt=""><figcaption></figcaption></figure> <figure><img src="https://3980662486-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyySSunF8lTBEbKNJWiGw%2Fuploads%2F97sIiYp6EXlDc3DnqE18%2FScreenshot_7.jpg?alt=media&amp;token=cb0f74c6-a191-4e6f-aca6-cdd09e5c2929" alt=""><figcaption></figcaption></figure></div>