If SDDC Manager is configured to work with your VMware Customer Connect and Dell EMC accounts, LCM automatically polls the depots to access install and upgrade bundles. You receive a notification when a bundle is available and can then download the bundle.
If SDDC Manager does not have direct internet connectivity, you can either use a proxy server to access the depot, or download install and upgrade bundles manually using the Bundle Transfer Utility.
To download an async patch bundle, you must use the Async Patch Tool. For more information, see the Async Patch Tool documentation.