This article explains well on how to upgrade an ESXi from 6.7 to 7.0. For me it didn’t allow as it was aking minimum ESXi version in the system as 7.0. But it allowed to patch from 7.0 to 7.0U3d patch. It was a great experience.
21 years of experience in various layers of software. Primarily experienced in system side software design and development on server management software. Interested in linux development in x86 and arm architecture.