You must use the ZENworks System Update feature to upgrade from ZENworks Configuration Management 10.1.x to SP2 (10.2). For more information, see Section 3.0, Upgrading from ZENworks Configuration Management 10.1.x to SP2 (10.2).
For more information about upgrading from 10.0.x, see Section 2.0, Upgrading from ZENworks Configuration Management 10.0.x to SP2 (10.2).