to version 10.2.1 Service Pack 2, you must upgrade all the application services along with the Informatica domain to version 10.2.1 before you apply the service pack.
To determine the current Informatica product version, click
Help
About Informatica Administrator
in the Informatica Administrator header area.
For more information about the service pack paths in version 10.2.1 Service Pack 1, see the
Informatica 10.2.1 Service Pack 1 Big Data Release Notes