What is the command for updating an ESXi host

esxupdate is a legacy deprecated tool that has been replaced by esxcli - using esxupdate with 'software vib update' syntax does not represent a currently supported ESXi update method.

The esxcli command-line interface is the current supported tool for managing software VIBs (VMware Installation Bundles) on ESXi hosts, and 'esxcli software vib update -d' is the correct syntax to update a VIB from a specified depot or offline bundle. The esxcli framework replaced the legacy esxupdate tool and provides a consistent, extensible interface for host software management tasks. The -d flag specifies the path to the depot file or offline bundle used as the update source.

This option contains syntax or capitalization errors that would not be recognized correctly by the esxcli framework, making it invalid despite appearing similar to the correct command.

esxupdate is deprecated and the syntax 'software update' without the required 'vib' subcommand is not valid for managing individual VIBs in the current ESXi CLI toolset.