error unlocking ls990

ls990 i already flash phone with latest firmware from support and always get the same thing

Welcome to Octoplus/Octopus Box LG Software version 2.2.5
——————————————————————————–
Platform: LG Qualcomm
Selected port: COM55
Selected model: LS990
Reading info…Failed!
Port busy
Performed by 2.2.5 software version.
——————————————————————————–
Platform: LG Qualcomm
Selected port: COM55
Selected model: LS990
Reading info…
Model ID: LGLS990
IMEI: 352596-06-288431-8
Android version: 5.0.1
Battery level: 28%
Mode: Emergency
Initializing flash…OK
SW version: LS990ZVC_08
LAF Version: 1.1
Product ID: PT02S140925004851
IMEI: 352596-06-28xxxxxxxxxx
Target operator: SPR
Hardware: rev_10
Performed by 2.2.5 software version.
——————————————————————————–
Checking data…OK
Platform: LG Qualcomm
Selected port: COM55
Selected model: LS990
Reading info…
Model ID: LGLS990
IMEI: 352596-06-288431-8
Android version: 5.0.1
Battery level: 28%
Mode: Emergency
Initializing flash…OK
SW version: LS990ZVC_08
LAF Version: 1.1
Product ID: PT02S140925004851
IMEI: 352596xxxxxxxxxxx
Target operator: SPR
Hardware: rev_10
Opening "LS990ZV8_00.oct"…OK
Setting options…OK
Reading partition…OK
Formating USERDATA…OK
Writing PrimaryGPT…OK
Writing modem…OK
Writing sbl1…OK
Writing dbi…OK
Writing aboot…OK
Writing rpm…OK
Writing tz…OK
Writing boot…OK
Writing persist…OK
Writing recovery…OK
Writing laf…OK
Writing factory…OK
Writing system…OK
Writing cache…OK
Writing userdata…OK
Writing BackupGPT…OK
Reading partition…OK
Formating RCT…OK
Formating MPT…OK
Finalizing…OK
Writing firmware done!
Performed by 2.2.5 software version.
——————————————————————————–
Platform: LG Qualcomm
Selected port: COM55
Selected model: LS990
Reading info…
Model ID: LGLS990
IMEI: 352596-06-288431-8
Android version: 5.0.1
Battery level: 17%
Mode: Normal
Firmware compiled date: Jan 05 2015
Firmware compiled time: 01:00:00
Firmware released date: Jan 22 2015
Firmware released time: 18:05:01
SW Version: MPSS.DI.2.0.1.c1.13-00053-M8974AAAAANPZM-1
IMEI: 3525xxxxxxxxxxx
SPC: 532350
MEID: 35259606288431
Mobile ESN: 80BD3590
SSD_A: 42672CDBDF8C2BCC
SSD_B: FD1C3318917BA381
AKEY: 6957107728800550306
OTKSL: 680419
NAM Name: Sprint
MDN: 305-992-9996
User Lock Code: 5457
SID/NID: 4139 / 65535
MCC: 310
MNC: 00
MIN1: 2905037
MIN2: 305
Performed by 2.2.5 software version.
——————————————————————————–
Checking data…OK
Platform: LG Qualcomm
Selected port: COM55
Selected model: LS990
Initializing ADB…OK
Waiting for phone…OK
Model ID: LGLS990
Firmware version: LGLS990AT-00-ZV8-SPR-US-JAN-22-2015+04
Kernel version: 3.4.0-perf-g7b991c8 (lgmobile@LGEARND13B8) (gcc
version 4.8 (GCC) ) #1 SMP PREEMPT Thu Jan 22 18:11:05 KST 201
Android version: 5.0.1
Hardware: Qualcomm MSM8974PRO-AC ARMv7 Processor rev 1 (v7l)
Sending unlock files…
Initializing flash…
Performed by 2.2.5 software version.

any advice will be grat