# Use Your Flashing Key

### Step-by-Step Instructions

1. In the Flash section of the Conectum Portal, locate the **Enter your key** field.
2. Enter your Flashing Key manually or click **Paste Code** if you have copied it.
3. The system will automatically validate your key.
4. Once validated, you will see a confirmation message:

   <mark style="color:$success;">**“Key valid. You may now proceed with flashing.”**</mark>
5. Click **Download Castrum OS** to continue.

The installer will automatically detect your connected Pixel device and download the correct Castrum OS image for your model.

<figure><img src="/files/ZqSPMmPViWQrIruUw51p" alt="" width="563"><figcaption></figcaption></figure>

{% hint style="warning" %}

### Important Notes

* The Flashing Key must belong to your account.
* Each key can be used for one installation.
* Keys are non-transferable and non-refundable.
* The key becomes activated once you see the successful confirmation message.
  {% endhint %}

6. Wait for the progress bar to finish.\
   When the message **“Download completed successfully”** appears, click **Next**.

<figure><img src="/files/SoWsMBtex5wjP5jv5ll7" alt="" width="563"><figcaption></figcaption></figure>

{% hint style="danger" %}
Do not disconnect your device or refresh the page during the download process.\
Interrupting the process may invalidate your flashing key, and it cannot be reused or refunded.
{% endhint %}


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