Every step of the VMware Cloud Foundation upgrade path, in order, from VCF 4.0 to VCF 9.1. Each guide below covers one hop — prechecks, bundle downloads, the upgrade itself, and the verification afterwards — with screenshots and the errors I actually hit along the way.

How to use this series: find your current version in the list (newest last), then follow the guides hop by hop. VCF does not support skipping intermediate versions — if you’re on 4.x you’ll pass through 4.5 and 5.x before reaching 9. For the 9.x era, SDDC Manager updates and Fleet Management (VCF Operations) updates are separate tracks; both are covered here and in the VCF 9 Fleet Management series.