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First downgrade it from 4.1.2 to 4.0.4 than unlock 100% work
Selected model: I747M
Selected port: COM6 Z3X BOX Serial Port
Selected port speed: 115200
Reading phone info...
Build: M8960A-AAAANAZM-1.0.443072
Done with Samsung Tool v.16.0
Selected model: I747M
Selected port: COM6 Z3X BOX Serial Port
Selected port speed: 115200
Reading phone info...
Build: M8960A-AAAANAZM-1.0.443072
Reading security... error access denied
Done with Samsung Tool v.16.0
Selected model: I747
Selected port: COM193 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M8960A-AAAANAZM-1.0.442802
Done with Samsung Tool v.16.0
Selected model: I747
Selected port: COM193 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M8960A-AAAANAZM-1.0.442802
Reading security... OK
Calculating... OK
Writing security... OK
Reseting...
Unlock done
Done with Samsung Tool v.16.0