Even with a free Customer Connect account, some patches are behind a paywall. If you see “Entitlement required,” your support contract has lapsed or you are using a free ESXi license (which does not include security patches beyond critical ones). Renew SnS or switch to a paid vSphere license.
This is the most direct method. Steps:
Get-FileHash VMware-ESXi-7.0U3c-19482537-depot.zip -Algorithm SHA256 vmware esxi 7.0 patch download