the port you selected on SEMC 8.4 must be the USB-TO-SERIAL-COM you see on the device manager , otherwise your phone won't be identified by the soft ....once done do :
-check Clear User Code case
-press Do selected Jobs
-press shortly the power button on ur phone
that's all ..
The operation should succeed unless u have some TX/RX related problems in ur phone.
Regards.





