Cobo Vault firmware version V2.5.0 (Multi-coin) or later is fully compatible with Polkadot.js. Users can use their Cobo Vault to sign transactions for DOT/KSM staking, governance, account operation and other functions while only using a watch-only wallet for Polkadot.js. The following instruction below will show the “how to add nominator” feature. Other functions share the similar operation interaction between Cobo Vault and Polkadot.js.
Preperation:
1. Cobo Vault Essential or Pro upgraded to firmware version V2.5.0 (Multi-coin) or later. (Upgrading Firmware)
2. Creating a Polkadot.js Watch-Only Wallet
3. Sufficient balance on your DOT/KSM address.
4. Polkadot.js: https://polkadot.js.org/apps/#/explorer
Adding Nominator (e.g. DOT)
1. Polkadot.js: Click [Network -> Staking]. Select “Account actions'' tab.
2. Click [+ Nominator].
3. Set “stash account”, “controller account” and click [next].
4. Select “nominated accounts” from the list of “candidate accounts” and click [Bond & Nominate].
5. Click [Sign via QR] and show the unsigned transaction data in QR code format.
6. On the Cobo Vault: Touch the “scan” icon and scan the QR code shown on Polkadot.js.
7. Confirm the transaction details on Cobo Vault. Touch [Sign] and enter password to verify. Afterwards ,the signed transaction data will be displayed in QR code format.
8. Polkadot.js: Click [Scan via QR] and scan the QR code shown on the Cobo Vault.
9. Transactions are submitted automatically after the scanning has finished.
