lg e610 kdz flasher problem PHONE WAS NOT FOUND

hi



i want flash my e610 with kdz flasher by always give me this error



21:57:56 : Launching SW update

21:57:56 : Unpacking KDZ

21:58:10 : KDZ file extraced

21:58:21 : Files were extracted.

21:58:21 : LGMobileDL Load.

21:58:21 : Port = -3

21:58:21 : Connecting to phone

21:58:21 : PHONE WAS NOT FOUND!

21:58:23 : ===FINISHED===

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