Apr 15 2011
here an article that describes how to easy update a ESXi host to the latest update.
1: Make sure there are no VM’s running on your ESXi machine, and put this ESXi machine in maintanance mode.
2: install the vSphere CLI (in my case on the same machine where the VMware vSphere Client is installed) on your system, you can download it here:
3: start the vSphere CLI and change the directory to the bin directory by typing cd bin
your full path should look something like this: C:\Program Files\VMware\VMware vSphere CLI\bin>.
4: get the update files from VMware at http://www.vmware.com/patch/download/, you can also sign up for an update email alert notification
(in my case I downloaded the updatefile (here named ESXi_update.zip) to the c:\update folder)
4: now run the vihostupdate script with the command C:\Program Files\VMware\VMware vSphere CLI\bin>vihostupdate.pl -i -b –server:192.168.102.100 c:\update\ESXi_update.zip
(in my case the ESXi host has the 192.168.102.100 IPAdress)
you will be asked for the username and the password and the update will begin…
you need to reboot your ESXi host and with some update levels you have also have to upgrade the VMware vSphere client. (this will should happen automatically with some mouse-clicks.)