How to Update Android on Your Motorola Atrix HD?
You can downloads the updates over your Wi-Fi connection (if available) or mobile network. Note that updates can be quite large (25MB or more) and may not be available in all countries. If the mobile network updates are not available in your country, update using a computer. To update using a computer, go to www.motorola.com/support and check the “Software” links. If an update is available, just follow the installation instructions.