No patches available"VMware SDDC Manager 5.2.x
To resolve the issue follow the steps provided in the following documentation: Offline Download of Flexible BOM Upgrade Bundles
In some occasions you might additionally need to disable the upgrade compatibility checks using the steps from KB article:
323368 - Bypass SDDC Manager upgrade compatibility checks when upgrade is unavailable due to missing compatibility data
In that case make sure to verify in advance the compatibility of the upgrades using the VMware Product Interoperability Matrixes