Update Chain Metadata in Parity Signer

Due to the fact that your Parity Signer Device is always offline and is air-gapped, there is a unique system in which you must partake to update the chain metadata so that your transactions are valid. You can use the Parity Technologies Metadata Portal, or the Nova Wallet Metadata Portal to find QR codes which will provide your Parity Signer Device with the information required to update the chain metadata.

Chain Description	Parity Technologies Metadata Portal	Nova Wallet Metadata Portal
Polkadot / Kusama / Westend Relay Chains	Supported	Supported
Parachains, Solochains	Not Supported	Supported

The following steps need to be carried out on your Parity Signer Device.

1. Navigate to the appropriate metadata portal. Note: This should be done on a device which is not your Parity Signer Device.

2. Select the appropriate blockchain that you wish to update the metadata for.

3. If you are updating a chain for the first time, Select the Chain Specs tab at the top of the metadata portal screen.

4. Using your Parity Signer Device, Select Scan.

5. Scan the Chain Specs QR code with your Parity Signer Device.

6. Review the verifier certificate and Select Approve.

7. Select the Metadata tab at the top of the metadata portal screen.

8. Using your Parity Signer Device, Select Scan.

9. Scan the Metadata QR code with your Parity Signer Device. Note: this can take a few minutes to complete.

10. Review the verifier certificate and Select Approve.