# 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 case, we are using a PC.

<figure><img src="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FMv5HOwUIYhgL7GdIwIyW%2Fimage.png?alt=media&#x26;token=93a5cc6d-6cd2-4497-8d3e-5da19de54152" alt=""><figcaption></figcaption></figure>

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

<figure><img src="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2F6sCcxluHjVlFdT1c8iv7%2Fimage.png?alt=media&#x26;token=180c768a-2b05-4157-92c4-8ca73d25673c" alt=""><figcaption></figcaption></figure>

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

![](https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FRwaRPv03X8VV0wWJXHXu%2Fimage.png?alt=media\&token=7e3aca7e-c0fe-4eed-b483-af1e2dbf4834)
{% endhint %}

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

<figure><img src="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FvJiJbp4aJLFdznJE7NqO%2Fimage.png?alt=media&#x26;token=e8d2126d-9a15-46bb-b399-53142f0819be" alt=""><figcaption></figcaption></figure>

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

<figure><img src="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FseNPZmkuZXnEhzhlxVTG%2Fimage.png?alt=media&#x26;token=c2de5e0e-29cb-4008-83ce-31e081b91e49" 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://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FFxGKSMfCVjIcm3HpYa6m%2Fimage.png?alt=media\&token=849952ae-7929-4a39-aba2-62817b7c2364)
{% endhint %}

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

<figure><img src="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FXhkoWF84WM8wTUpwKg4L%2Fimage.png?alt=media&#x26;token=ee7ac894-240e-4cdc-9e44-ff99e90cf049" alt="" width="332"><figcaption></figcaption></figure>

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