# 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="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FVEdgvNn3oJ89VB1lgr1E%2Fimage.png?alt=media&#x26;token=b3b8e219-89e0-4c07-aef1-0f0773a0389a" 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%2FrteXkCOZGCnPwNe5PvI9%2Fimage.png?alt=media&#x26;token=e91bb14f-9a2c-46ae-b298-7cadbce9805c" 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="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FbCTQ1gdVaYOQwI6u94w5%2Fimage.png?alt=media&#x26;token=802f1546-4b07-42f1-9620-0763c4b661c8" 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%2FN8G4darh2pYoFaOomRpX%2Fimage.png?alt=media&#x26;token=2edd9280-152e-4be8-9f5b-98cb95d0f06b" 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="https://631687399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lh39Kwxa1xxZM9WX_Bs%2Fuploads%2FeRAMV1a54xjSPgKLMeJd%2Fimage.png?alt=media&#x26;token=d5566f73-2695-4e31-99df-5b3087dd3ddb" alt="" width="332"><figcaption></figcaption></figure>

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