SIMATIC_S7_STEP7_V55_ISO (Base version)SIMATIC_S7_STEP7_V55_SP2_ISO (Service Pack 2)If you're experiencing issues downloading Simatic Step 7 V5.5 SP2, ensure that:
Execute the setup.exe file. If installing the Professional 2010 SR2 edition, the package will include S7-GRAPH, S7-SCL, and S7-PLCSIM . Simatic Step 7 V5 5 Sp2 Download Fixed