Lg ls990 unlock success but still locked Cpu free download 2015

Lg ls990 unlock success but still locked

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UNLOCK LS990 SPRINT version 5.0.1 not rooted ,it says successful but phone still locked shows invalid sim:
Welcome to Octoplus/Octopus Box LG Software version 2.1.3
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Checking data...OK
Platform: LG Qualcomm
Selected port: COM446
Selected model: LS990
Reading info...
Model ID: LGLS990
IMEI: 352596-06-421711-1
Android version: 5.0.1
Battery level: 88%
Mode: Normal
Firmware compiled date: Jan 05 2015
Firmware compiled time: 01:00:00
Firmware released date: Jun 1 2015
Firmware released time: 13:38:45
SW Version: MPSS.DI.2.0.1.c1.13-00053-M8974AAAAANPZM-1
IMEI: 352596-06-421711-1
SPC: 000000
MEID: 35259606421711
Mobile ESN: 80C93CCB
SSD_A: 6CAADE5CE6EDAAC3
SSD_B: DB709E164BAADB8B
AKEY: 5106299895552744014
OTKSL: 990008
NAM Name: Sprint
User Lock Code: 1457
Sending unlock files...
Initializing ADB...OK
Waiting for phone...OK
Switching to Download mode...OK
Initializing flash...OK
Reading partition...OK
Creating Carrier backup...OK
Unlocking...OK
Phone successfully unlocked!