I can't find any documentation no how to do this. I've found how to get from 1x or 2.0 to 2.5 but not how to just move from 2.5 to 2.5u4. Any help would be greatly appreciated.
Welcome to the forums!
Not sure if there is a document for 2.5 to 2.5 U?.
Just make sure if you want to use the Performance Overview plugin, you look @ this KB article:
Jase McCarty, VCP, vExpert
Co-Author of VMware ESX Essentials in the Virtual Data Center
(ISBN:1420070274) from Auerbach
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Welcome to the boards. Your best source of documentation is - http://www.vmware.com/support/pubs/vi_pages/vi_pubs_35u2_3i_e.html
But for your question some of your answers might be found on this page - http://www.vmware.com/support/vi3/doc/vi3_vc25u4_rel_notes.html
Hello and welcome to the forums.
It basically comes down to: "This release supports upgrading from VirtualCenter 1.4.1, VirtualCenter 2.0.2 (including Update 1, Update 2, Update 3, Update 4, and Update 5), VirtualCenter 2.5, VirtualCenter 2.5 Update 1, or VirtualCenter 2.5 Update 2, or VirtualCenter 2.5 Update 3, to VirtualCenter 2.5 Update 4" - release notes
And "The VMware Infrastructure Management installer detects any previous VirtualCenter release and uninstalls it. After the uninstall, the actual installation of VirtualCenter begins." p.53 of the Upgrade Guide.