Sigma team plz help

How to unlock?



--------- 2018-08-13 21:10:54 ---------
SigmaKey 2.28.07b1 Qcom: Direct unlock
ALCATEL HS-USB Diagnostics 903A (COM133), Provider: TCL, Driver ver.: 2.1.2.1, Date: 10/8/2015, USB\VID_1BBB&PID_903A&REV_0310&MI_01
Firmware: MPSS.JO.2.0.c1-00150-8909_GEN_PACK-1
Date: Mar 16 2018 12:06:43, Jan 26 2017 08:00:00, 8909.gen
Software IMEI: 015075001504021
Bluetooth address: 000000000000
The phone is NOT connected properly. Read the manual at the official site for details.
--------- 2018-08-13 21:11:07 ---------
SigmaKey 2.28.07b1 Qcom: Direct unlock
ALCATEL HS-USB Diagnostics 903A (COM133), Provider: TCL, Driver ver.: 2.1.2.1, Date: 10/8/2015, USB\VID_1BBB&PID_903A&REV_0310&MI_01
Phone model: OT-5044C
Firmware: MPSS.JO.2.0.c1-00150-8909_GEN_PACK-1
Date: Mar 16 2018 12:06:43, Jan 26 2017 08:00:00, 8909.gen
Baseband Processor: 8909
Detecting flash...eMMC, Flash size: 14.68 Gb
Hardware IMEI: 015075001504021
Reading security block...XVT3UCZ1CL10
File I/O operation failed