we want to upgrade our vCenter 5.0 to 5.5 with update.
does someone have any tips or doc that can help us?
Have a look at the best practices Kb, that would suffice everything.. VMware KB: Upgrading to vCenter Server 5.5 best practices
watch this video ..hope it will help you..
VMware vSphere 5.5 Upgrade Part 1. SSO and Inventory Service - YouTube
VMware vSphere 5.5 Upgrade Part 2. vCenter Server, Web Client, Upgrade Manager and ESXi - YouTube