i9305 unlock problem

I have i9305 for unlock





Selected model: I9305

Selected port: COM32 Z3X BOX Serial Port

Selected port speed: 115200

Reading phone info...

Build: M9615ACEHWMAZD179599

Reading security... error access denied

Done with Samsung Tool v.16.3



always error access denied. What shoul i try to do?

via Welcome to gsm-tips http://forum.gsmhosting.com/vbb/f453/i9305-unlock-problem-1748746/