i think it's 5.0.0.0 u2 may be
my question is why it was not updated to 5.1 u1 latest
How did you update whether using ISO image or through Web or Depot.
can we update esxi 5.0.0.0 to 5.1 latest by using v center update manager??
Yes you can update to 5.0 to 5.1 using UM
Wall of Sheep — How to upgrade ESXi 5.0 to 5.1 without errors using the command line.
