Remenber take care with the update secuence as show above:
If you have installed the last version before this update v5.5, you can easy update all the components trough the new iso. download it, and execute the menu, where you must update in the same way you installed it, it is, simple install or custom install, and the best is taht you don´t need to restart your virtual machine (you services will need to be restarted during the installation)
For this example, we have the build 1750787 installed with the "Custom Install" process the first time, don´t care if you don´t know how it was installed, beacuse if you mix the process, you will not be able to continue the process until you change the wizard from the other type:
Executing the ISO, you will be alert about an earlier version of vCenter componentes...in order to update all of them:
No reboots requirements , only the services needs to be restarted if you choose to close them during the update process:
The final custom component is the vCenter Server:
And volia! Finally, verify taht you have the las build 1891313
Download Link vCenter Server 5.5 Update 1b:
https://my.vmware.com/web/vmware/info/slug/datacenter_cloud_infrastructure/vmware_vsphere/5_5
