You can upload an OVF or OVA package to a library item by using the UpdateSession service. You can also download an OVF and OVA packages from a content library to your local file system.
In case you want to upload an OVF package, the location of the content determines whether you can pull the content from a URL or push the content directly to a content library. For information about uploading content to library items, see Uploading a File from a Local System to a Library Item and Upload a File from a URL to a Library Item.
To download the files that are included in an OVF or OVA package to your local file system, use the DownloadSession service. For more information, see Downloading Files to a Local System from a Library Item.