Moto X xt1058 At&t erorr

Moto X xt1058 unlock error

——— 2016-04-08 21:37:06 ———
SigmaKey 2.15.08b2 ADB: Get unlock codes
* daemon not running. starting it now *
* daemon started successfully *
^ Mot Composite ADB Interface
Version: Linux version 3.4.42-gfff16c8 (hudsoncm@ilclbld27) (gcc version 4.8 (GCC) ) #1 SMP PREEMPT Mon Aug 17 06:05:02 CDT 2015
Phone model: motorola XT1058
Android 5.1; Firmware: LPA23.12-21.7; Date: Mon Aug 17 05:52:36 CDT 2015
Version: LPA23.12-21.7
Baseband Firmware: MSM8960PRO_BP_23255.140.93.00R
Please ROOT the phone first!

and no root avalible for this latest Version: LPA23.12-21.7