When you update from Data Synchronizer 1.1.1 to Data Synchronizer 1.2, you obtain the Data Synchronizer 1.2 ISO as part of your updated connector package. Then you use YaST to update your Synchronizer system to Data Synchronizer 1.2.
Section 3.1, Using Patch CD Update in YaST
Section 3.2, Running the Data Synchronizer Update Script
Section 3.3, Restarting the Synchronizer Services