Using VMware Update Manager is pretty easy for VMware patch update but I would like to share about how to update VMware ESX patch using command line interface here as an alternative way.

First download VMware patch from VMware download web site said for an example:
VMware ESX 3.5 Update 2
Latest Version: 3.5 Update 2 | 8/13/2008 | Build: 110268

Login with your username & password and click YES for agree with VMware Inc. term and condition.

Option 1:

Once completed the VMware patch download, you can either copy the patch source file to Apache or IIS web server and unzip it said http://webserver.malaysiavm.com/esxupdate/

Before continue with VMware ESX host patch, you can vmotion all VMware guest from ESX host 1 to VMware ESX host 2. Connect to VMware ESX host 1 box using SSH,

Enter server maintenance mode:

Tips: How can I check whether ESX host is in maintenance mode.

Turn Off Firewall:

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