You can perform a sequential or skip-level upgrade to

VMware Cloud Foundation

4.5.x from

VMware Cloud Foundation

4.2.1 or later. If your environment is at a version earlier than 4.2.1, you must upgrade the management domain and all VI workload domains to

VMware Cloud Foundation

4.2.1 and then upgrade to

VMware Cloud Foundation

4.5.x.

The first step is to download the bundles for each

VMware Cloud Foundation

component that requires an upgrade. After all of the bundles are available in

SDDC Manager

, upgrade the management domain and then your VI workload domains.