FNB ConeXis X1 imei repair Fail.

SigmaKey 2.29.14 Qcom: Repair IMEI
ZTE Handset Diagnostic Interface(DFU) (COM631), Provider: ZTE Corporation, Driver ver.: 1.2066.1.3, Date: 4/29/2010, USB\VID_19D2&PID_0112&REV_0310
Phone model: ConeXis X1
Version: FNB_ZA_P809F52V1.0.0B10,
Firmware: MPSS.JO.1.2.c3-00131-8909_GEN_PACK-1
Date: Nov 2 2016 12:31:35, Sep 02 2016 08:00:00, 8909.gen
Sending boot...Done
Restarting phone...Missing response from phone




Need help please