Switel s52d unlock

i am facing problem while unlocking zte s52d .
I have connected phone with and without battery but error

Searching phone;
Phone detected (@oem118.inf,%vcom_preloader%;PreLoader USB VCOM (Android))
Preparing to start meta mode;
Searching for debug port; (be sure drivers from support were installed)
Debug Port found on PreLoader USB VCOM (Android) (COM10);
Preparing to connect meta mode;

Time needed – 00:00:29

Log file saved to: LOG_21_02_2016_12_06_03.txt