Where to get them, and options for adding them to a deployment.
Most products provide the option to include service packs in a deployment. You can download a service pack from autodesk.com, or use a service pack stored on a local hard drive or network location. In either case, the service pack will be applied after installation of the main product.
If you select the Install Service Pack from autodesk.com button, the service pack will be automatically downloaded and you will not need to extract the MSP file.
You can add multiple service packs to a deployment only if the service packs are locally stored, not if you are downloading them from autodesk.com.
When you include a service pack, the service pack is applied to the current deployment only. Multiple service packs can be included in a deployment. The service pack file is included in the deployment and is applied after the product is installed.