# Update network metadata

Given that your Polkadot Vault device is always offline and separated from any networks (air-gapped), you'll need to engage in a specific process to ensure your transactions remain valid by updating the chain metadata.

This can be done through the use of QR codes found on the [Novasama Metadata Portal](https://metadata.novasama.io/#/polkadot), which will provide your device with the information required to update the chain metadata.

To update the chain metadata, please follow the instructions below:

{% hint style="info" %}
Please look at the following example for your perusal. Here, we are updating the metadata of the Avail network.
{% endhint %}

**Step 1**: Navigate to the [Novasama Metadata Portal](https://metadata.novasama.io/#/polkadot). The interface should be like the image below.

{% hint style="info" %}
This should be done on a device that is **not** your Polkadot Vault device (PC recommended).
{% endhint %}

*In this example, we are using a PC.*

<figure><img src="/files/TklGsFiBvkc411nPwHoZ" alt=""><figcaption></figcaption></figure>

**Step 2**: Choose the network you need to update in the "**Network**" tab on the sidebar.

<figure><img src="/files/Ex6IUFitn3IK1yB1IGNs" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
To make it easier, type the network you want to update in the "**Search**" bar.

![](https://docs.subwallet.app/~gitbook/image?url=https%3A%2F%2F631687399-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252F-Lh39Kwxa1xxZM9WX_Bs%252Fuploads%252FRwaRPv03X8VV0wWJXHXu%252Fimage.png%3Falt%3Dmedia%26token%3D7e3aca7e-c0fe-4eed-b483-af1e2dbf4834\&width=300\&dpr=4\&quality=100\&sign=eafa51e0\&sv=2)
{% endhint %}

**Step 3**: Go to the "**Metadata**" tab.

<figure><img src="/files/zEeUIeiWUg5ZxMM7gC01" alt=""><figcaption></figcaption></figure>

**Step 4**: Scan the Metadata Animated QR code using your Polkadot Vault device.

<figure><img src="/files/FgsIzlMaEbIS7VYuD0OQ" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Make sure your device remains stationary while the scanning process is in progress. This may take a few minutes to complete.

![](https://docs.subwallet.app/~gitbook/image?url=https%3A%2F%2F631687399-files.gitbook.io%2F%7E%2Ffiles%2Fv0%2Fb%2Fgitbook-x-prod.appspot.com%2Fo%2Fspaces%252F-Lh39Kwxa1xxZM9WX_Bs%252Fuploads%252FFxGKSMfCVjIcm3HpYa6m%252Fimage.png%3Falt%3Dmedia%26token%3D849952ae-7929-4a39-aba2-62817b7c2364\&width=300\&dpr=4\&quality=100\&sign=8b3410c7\&sv=2)
{% endhint %}

**Step 5**: Once you've completed, review the verifier certificate and select **"Approve**".

<figure><img src="/files/tEwax3vXo61TbqS5EyJ2" alt="" width="332"><figcaption></figcaption></figure>

Now, you have successfully updated the network's metadata!


---

# 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.subwallet.app/main/mobile-app-user-guide/cold-wallet-management/attach-polkadot-vault-prev.-parity-signer-accounts/update-network-metadata.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.