To scan for updates esxupdate -m https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/esx/vmw/vmw-ESXi-4.1.0-metadata.zip scan Stage updates esxupdate -m https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/esx/vmw/vmw-ESXi-4.1.0-metadata.zip stage Enter Maintenance Mode vim-cmd /hostsvc/maintenance_mode_enter Apply updates esxupdate -m https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/esx/vmw/vmw-ESXi-4.1.0-metadata.zip update Exit Maintenance Mode vim-cmd /hostsvc/maintenance_mode_exit Finally Reboot reboot