1. Online upgrade: Enter the navigation map of Bank of America, connect the navigation card, and the tool will automatically read the version number, serial number and other related information, so as to judge whether online upgrade is possible. Upgrade is divided into navigation upgrade and incremental upgrade. Navigation upgrade is to upgrade the whole navigation software, and incremental upgrade is to upgrade the electronic eye. When the upgrade tool prompts that navigation can be upgraded, click Navigation Upgrade, and then click Upgrade to pop up the navigation tool prompt. Click OK to enter the navigation download and installation process. After the new version is downloaded and installed, the navigation installation will be prompted. Please pay and activate. After the payment activation is successful, the whole upgrade process is completed.

2. Card issuance upgrade: enter the upgrade service page, upgrade the card issuance, and the page of filling in vehicle equipment information pops up. When you are finished, click Add Finish to complete the upgrade.

3. Authorization code upgrade: search Bank of America Mall on the webpage, click the authorization code of Bank of America car navigation, enter the authorization code purchase page, and click Quick Purchase to complete the upgrade.

4. Store upgrade: Enter the local 4S store to upgrade.