sony D5503 unlock problem

sony D5503 trying to unlock with sigma box
after root with kingo root
it always storps at Driver start error
tried it in 2 windows 7 32 bit and
and another windows 10 64 bit all the same
any help please
thank you

SigmaKey 2.15.02 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ Android Composite ADB Interface
Version: Linux version 3.4.0-perf-gd26777b-00851-ga8b7b55 (BuildUser@BuildHost) (gcc version 4.8 (GCC) ) #1 SMP PREEMPT Thu Nov 19 10:33:19 2015
Phone model: Sony D5503
Android 5.1.1; Firmware: 14.6.A.1.236; Date: Thu Nov 19 10:33:19 CET 2015
Version: 14.6.A.1.236
Baseband Firmware: 8974-AAAAANAZQ-10270086-81
Baseband Processor: Qualcomm MSM8974
Reading security block….Driver start error