Hello,
ESX servers are updated in an other fasion. Datacollection is possible for firmware and agents, drivers a supplied in an offline image that u use during installation with vip updates. Firmwares can be updated with Hpsum on a booted SPP iso image. For more info read the following : http://h30499.www3.hp.com/t5/ESXi/HP-ESXi-Offline-Bundle-for-VMware-ESXi-5-0-using-VMware-Update/td-p/5414083#.VbZkLopUfCQ
ESX servers are updated in an other fasion. Datacollection is possible for firmware and agents, drivers a supplied in an offline image that u use during installation with vip updates. Firmwares can be updated with Hpsum on a booted SPP iso image. For more info read the following : http://h30499.www3.hp.com/t5/ESXi/HP-ESXi-Offline-Bundle-for-VMware-ESXi-5-0-using-VMware-Update/td-p/5414083#.VbZkLopUfCQ