The steps to install the offline bundle for VMware ESXi 5.0 has changed from VMware ESXi 4.X. The vihostupdate command used in ESXi 4.X does not work against ESXi 5.0 hosts.
1. Download the bundle.zip.
Either Google “HP ESXi Offline Bundle for VMware ESXi 5.0” or go to www.hp.com → Support & Drivers → Drivers & Software → Search for the server model (e.g. ProLiant BL640c) → Select the server series → Select operating system = VMware ESXi 5.0 → Find “* RECOMMENDED* HP ESXi Offline Bundle for VMware ESXi 5.0 → Download
Note: If you have problems downloading the Offline Bundle (such as getting a prompt for ftp username and password); at the time of writing, the following link taken from the HTML source code – works: http://ftp.hp.com/pub/softlib2/software1/pubsw-windows/p2144920481/v67792/hp-esxi5.0uX-bundle-1.1-37.zip
2. Enter your ESXi Host in maintenance mode.
For this you have to relocate or poweroff all running VM’s to other hosts.
3. Activate SSH on your ESXi Host
Select “Troubleshooting Options”
4. Copy the bundle to the Host
Use WinSCP or similar to copy the bundle.zip to the tmp directory on the ESXi 5.0 host server. Don’t copy the bundle.zip with ESXi Datastore Browser.
5. Install the bundle
Use PuTTY or similar to establish an SSH connection to the host server, and run the command:
esxcli software vib install -d /tmp/bundle.zip
6. Reboot the Host