If you are switching to a new iOS device or have lost your old device and want to use Cobo Guard on the new device, you need to follow these steps to reset Cobo Guard to ensure its normal functionality.

To avoid potential risks, we do not recommend uninstalling and reinstalling Cobo Guard. If you mistakenly do so, you will also need to reset Cobo Guard to ensure its normal functionality. In this scenario, both “old device” and “new device” in the following text refer to the same device.

1

Download Cobo Guard

Download Cobo Guard on your new device.

2

Choose whether to restore key shares

Restore your MPC key shares from iCloud (if you have already backed them up on your old device), or create new ones.

3

Link Cobo Accounts

Link Cobo Guard on your new device to your Cobo Accounts. You will need to use Cobo Guard on your old device or an alternative multi-factor authentication (MFA) method for authentication.

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1. Download Cobo Guard

Download Cobo Guard and set up a PIN code on your new device. For detailed instructions, refer to Download the Cobo Guard app.

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2. Restore key shares or create new ones

Open Cobo Guard on your new device. You will be prompted to choose between Restore Key Shares or No Need to Restore Key Shares.

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Restore key shares

The prerequisite for restoring key shares is that you have backed them up via iCloud on your old device. Please follow the instructions in Back up your key shares.

  1. Choose Restore Key Shares. Cobo Guard will begin to check your key share files.

  2. Select the TSS Node IDs associated with the key shares you want to restore, then tap Restore.

  3. Enter the recovery passphrase you set earlier when creating these backups for your key shares, then tap Confirm.

    If you lose your passphrase, you won’t be able to restore your key shares from iCloud. Choose No Need to Restore Key Shares instead.

Cobo Guard will verify and restore your key shares. With the key shares successfully restored, a dialog showing “Key shares successfully restored” is displayed. Tap OK.

You can tap The menu icon and then My Public Key to view your public key and TSS Node ID. On the home screen, you can view the Link Cobo Guard to your account message.

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Create new key shares

If you don’t need to restore key shares, choose No Need to Restore Key Shares.

If you choose No Need to Restore Key Shares at this step, you will not be able to restore your private key shares afterward.
On the home screen, you can view the Link Cobo Guard to your account message.

  1. Log in to Cobo Accounts using an alternative MFA method, such as Google Authenticator.

    If you have not set up any other MFA method and cannot log in to your Cobo Account, please contact our support team.

  2. On the Login Methods tab or the MFA Management tab, click Reset next to Cobo Guard.

  3. Review the important information regarding the reset, then click Confirm to display a QR code.

  1. Open Cobo Guard on your new device and scan the QR code.
  2. On Cobo Guard, choose Link.
  3. With your account successfully linked, the Cobo Accounts page will display a message Please open Cobo Guard on your old mobile device for authentication.
    • If you can access your old device, open Cobo Guard on it and choose Approve.
    • Otherwise, click Cobo Guard not available? on the page, and use another MFA method for authentication.
      If you have not set up any other MFA method, please contact our support team.
      With successful authentication, you will be redirected to the MFA Management tab. Open Cobo Guard on your new device, tap The menu icon and then My Accounts, you will see the email to which your Cobo Accounts is linked. That means your Cobo Guard has been successfully linked to Cobo Accounts.
If you use another MFA method instead of Cobo Guard for the authentication in the above step, your Cobo Accounts will be temporarily frozen. An Admin from your organization will need to unfreeze it. If you are the only member of your organization, the whole organization will be frozen for 24 hours. You can log in to the Cobo Portal after this period.

Now you have completed the reset process.

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Generate and back up your key shares