ZTE Blade Vec 4G is it possible?

hi i want to unlock ZTE Blade Vec 4G (android 4.4.2) but after root with kingo root , in unlocking i ask again "Please ROOT the phone first!" . like this lo

SigmaKey 2.28.07 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ ZTE Handset ADB Interface
Version: Linux version 3.4.0 (wsys@SCL-2SH205) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Tue Dec 9 11:11:47 CST 2014
Phone model: ZTE ZTE Blade Vec 4G
Android 4.4.2; Firmware: KVT49L; Date: Tue Dec 9 11:01:47 CST 2014
Version: IL_PL_P892D30V1.0.0B04
Baseband Firmware: 0.1.c1.18-00014-M8926DAAAANAZM-1
Please ROOT the phone first!

thk the team