Need Help unlocking SGH-I337

Trying to unlock Samsung SGH-I337 with NCK BOX Samsung Module v0.8.2.. The phone was running Android OC4 5.0.1 which i downgraded to 4.4.2 NB1 then root…
Phone is rooted But the unlock is failing…

(ADB)Model Selected : SGH-I337
Detecting phone, wait….
LCD must be on.
If phone ask for SU, please allow.
If phone ask for auth please confirm.
MODEL : SAMSUNG-SGH-I337
BOARD ID : MSM8960
PLATFORM ID : msm8960
OS VERSION : 4.4.2
BUILD ID : KOT49H
BUILD DATE : TueFeb11223013KST2014
BUILD VERSION : KOT49H.I337UCUFNB1
SOFTWARE VERSION : I337UCUFNB1
Phone Subscriber Info:
Phone Type = GSM
Device ID = 359722055251983

(GSM)RIL VERSION : SamsungRILv3.0
(GSM)BASEBAND : I337UCUFNB1
(RIL)SERIAL NUMBER : R38FB0KXL7Z
(RIL)SW VERSION : I337UCUFNB1
Checking SU: True
Checking Root access: True
IMEI: 35972205525198
Auto Detecting Security Zone…
– Making Backup..
Unlocking please Wait.
Sending Data..
– Rebooting phone.. please wait…
Waiting For Phone To Restart…
This can take up to 2 min on some phones…
If phone ask for AUTH after reboot, please accept.
IF THIS TAKE LONG Then Reconnect Phone Cable…
BYPASS FAILED

Total Time: 00:00:45