Motorola XT1524 NO unlock with Sigma

I have a Motorola XT1524 and when i try unlock with Sigma give me....

--------- 2019-02-01 17:00:11 ---------
SigmaKey 2.29.18 Qcom: Get unlock codes
Motorola QC Diag Port (COM1003), Provider: Motorola, Driver ver.: 5.1.0.0, Date: 01.03.2013, USB\VID_22B8&PID_2EC1&REV_????&MI_00
Firmware: MPSS.DPM.2.0.2.c1.8-00041-M8936FAAAANUZM-1
Date: Oct 29 2015 06:09:40, Oct 26 2015 05:00:00, EAAAANVZ
Software IMEI: 353339065582160
Bluetooth address: 000000000000
Unable to read codes for this phone model. Do you want to perform direct unlock instead? [YES]
Unlocking phone.......Unsupported phone model


direct unlock.....
--------- 2019-02-01 17:03:16 ---------
SigmaKey 2.29.18 Qcom: Direct unlock
Motorola QC Diag Port (COM1003), Provider: Motorola, Driver ver.: 5.1.0.0, Date: 01.03.2013, USB\VID_22B8&PID_2EC1&REV_????&MI_00
Firmware: MPSS.DPM.2.0.2.c1.8-00041-M8936FAAAANUZM-1
Date: Oct 29 2015 06:09:40, Oct 26 2015 05:00:00, EAAAANVZ
Software IMEI: 353339065582160
Bluetooth address: 000000000000
Unlocking phone.......Unsupported phone model