I installed ESXi 4.1 update 1 (VMware-VMvisor-Installer-4.1.0.update1-348481.x86_64) on a Dell PowerEdge T310. After installation, I added the latest management bundle (OM-SrvAdmin-Dell-Web-6.4.0-1266 ...
Dell PowerEdge R410, installed Dell-customized ESXi 4.0 from VMware site (build 181792), installed the offline bundle with OMSA agent, set UserVars.CIMEnabled, UserVars.CIMOENProvidersEnabled and ...