I'm currently at version 5.1 with no patches on my ESXi servers, with matching version of vcenter. I can just download and install the vcenter 5.5 appliance or do I have to upgrade everything? any white papers for the upgrade path?
Installing vCenter Server 5.5 best practices
and here are some Methods of upgrading to vCenter Server 5.5
Hope that helped , if you need anything more let me know
I would be great if you will fresh setup .it will save ur time ...
I am sending u a link to download file
Login to your host using vphere and deploye this file its very simple process to setup Vcenter 5.5
Download second OVF file..
I am sure it will help you and u will do this with success..
One more thing try to give good resources to vcenter as vcenter should have good resources...
Hi I've written a blog post e explaining in detail how to upgrade from vcsa 5.1 to 5.5.
Follow the steps and you'll be able to upgrade To 5.5