Now that your have your vcenter appliance and update manager updated your all ready to update hosts. Here is the process:
- Download the ESXi 5.5 ISO
- Log into vcenter fat client
- Home -> Update Manager
- ESXi Images -> Import ESXi Image
- As part of import you can create a baseline called something like ESXi 5.5 Upgrade.
- Hosts and Clusters -> Select cluster and Update Manager
-
Attach the new upgrade baseline and scan hosts
- Then remediation to apply 5.5
- Login to console of ESXi to reboot it after upgrade (on mine it required a reboot first before it would upgrade so you may have to reboot twice)
- Reconnect in vcenter
- Scan for update
- License Server again
- Exit Maint mode and you have a 5.5 ESXi host