ls992zvf unlock solution

z3x told us that there is permanent unlock for this model lg992zvf after unlock, customer reset phone after 3days and the phone is locked back.
i tried to unlock again and it is demanding of credit which i don't have
see log below


2/4/2019 10:28:57 AM: LG 2-3G Tool v9.59
2/4/2019 10:28:57 AM: supported models: 1568
2/4/2019 10:28:57 AM:
2/4/2019 10:29:05 AM: Mode: Normal
2/4/2019 10:29:05 AM: Model: LS992ZVF
2/4/2019 10:29:05 AM: Build version: Feb 1 201810:10:44Aug 14 201711:00:00LS992ZVF
2/4/2019 10:29:05 AM: SW Version: MPSS.TH.2.0.c1.4-00060-M8996FAAAANAZM-1.102675.1.109838.1
2/4/2019 10:29:05 AM: IMEI: 35560207490140-0
2/4/2019 10:29:10 AM: BlueTooth Address: 00:00:00:00:00:00
2/4/2019 10:29:10 AM: Phone Code:
2/4/2019 10:29:10 AM: Elapsed: 6 secs. --> (v9.59)
2/4/2019 10:29:10 AM:
2/4/2019 10:29:17 AM: Mode: Normal
2/4/2019 10:29:17 AM: Model: LS992ZVF
2/4/2019 10:29:17 AM: Build version: Feb 1 201810:10:44Aug 14 201711:00:00LS992ZVF
2/4/2019 10:29:17 AM: SW Version: MPSS.TH.2.0.c1.4-00060-M8996FAAAANAZM-1.102675.1.109838.1
2/4/2019 10:29:17 AM: IMEI: 35560207490140-0
2/4/2019 10:29:18 AM: BlueTooth Address: 00:00:00:00:00:00
2/4/2019 10:29:18 AM: Phone Code:
2/4/2019 10:29:18 AM: Elapsed: 2 secs. --> (v9.59)
2/4/2019 10:29:18 AM:
2/4/2019 10:29:20 AM: Checking Login and Password...
2/4/2019 10:33:23 AM: OK
2/4/2019 10:33:23 AM: Ballance:
2/4/2019 10:33:23 AM: 0 crd.
2/4/2019 10:33:23 AM: Not enough credits
2/4/2019 10:41:29 AM: Mode: Normal
2/4/2019 10:41:29 AM: Model: LS992ZVF
2/4/2019 10:41:29 AM: Build version: Feb 1 201810:10:44Aug 14 201711:00:00LS992ZVF
2/4/2019 10:41:29 AM: SW Version: MPSS.TH.2.0.c1.4-00060-M8996FAAAANAZM-1.102675.1.109838.1
2/4/2019 10:41:29 AM: IMEI: 35560207490140-0
2/4/2019 10:41:31 AM: BlueTooth Address: 00:00:00:00:00:00
2/4/2019 10:41:31 AM: Phone Code:
2/4/2019 10:41:31 AM: Elapsed: 2 secs. --> (v9.59)
2/4/2019 10:41:31 AM:
2/4/2019 10:41:43 AM: Mode: Normal
2/4/2019 10:41:43 AM: Model: LS992ZVF
2/4/2019 10:41:43 AM: Build version: Feb 1 201810:10:44Aug 14 201711:00:00LS992ZVF
2/4/2019 10:41:43 AM: SW Version: MPSS.TH.2.0.c1.4-00060-M8996FAAAANAZM-1.102675.1.109838.1
2/4/2019 10:41:43 AM: IMEI: 35560207490140-0
2/4/2019 10:41:44 AM: BlueTooth Address: 00:00:00:00:00:00
2/4/2019 10:41:44 AM: Phone Code:
2/4/2019 10:41:44 AM: Elapsed: 1 secs. --> (v9.59)
2/4/2019 10:41:44 AM:
2/4/2019 10:41:49 AM: Checking Login and Password...
2/4/2019 10:41:51 AM: OK
2/4/2019 10:41:51 AM: Ballance:
2/4/2019 10:41:51 AM: 0 crd.
2/4/2019 10:41:52 AM: Not enough credits