The first step is to accept the download of the software. Download times will vary, depending on the size of the update and the wireless signal strength. You can continue to use your vehicle normally during the software download.
Once the software is downloaded, you can begin the installation process. Your vehicle will be immobilized (will not be usable/drivable) during this portion of the process. This cannot be overridden once the installation has begun.
Vehicle software update installation times will vary, depending on the component being updated and the contents of the update. The in-vehicle notice will provide the estimated completion time for the installation. Generally, the software installation is expected to take 20 minutes or less.