You can download them here
VMware vSphere 5: Private Cloud Computing, Server and Data Center Virtualization
You need to have a license for it and you need to have a MyVMware account that has the licenses tagged.
For command line based patching of ESXi 5 hosts, follow the steps in VMware KB: Installing patches on an ESXi 5.x host from the command line, which also includes the download URL. Unless you are using unsupported hardware, it's sufficient to install the latest patch to be up-to-date. The patches are cumulative as you can see at e.g.http://vibmatrix.v-front.de/
André
Hi,
Please refer to below KB article which provides link & steps to download patches.
http://kb.vmware.com/kb/1021623 - Downloading patches in My VMware