SC-02H unlock alway s failed

[ 1/29/2019 7:34:52 PM ] Operation: Read Codes via Server
[ 1/29/2019 7:34:52 PM ] Selected model: SC-02H
[ 1/29/2019 7:34:52 PM ] Selected port: COM77 USB Serial Port
[ 1/29/2019 7:34:53 PM ] Software version: 34.8
[ 1/29/2019 7:34:53 PM ]
[ 1/29/2019 7:34:53 PM ] Checking Login and Password... OK
[ 1/29/2019 7:34:55 PM ] Ballance: 20 crd.
[ 1/29/2019 7:35:16 PM ] You have 20 credit(s) left. This operation takes 5 credits.Continue? Yes
[ 1/29/2019 7:35:19 PM ] Waiting ADB device... OK
[ 1/29/2019 7:35:21 PM ] Reading phone info...
[ 1/29/2019 7:35:21 PM ] Model: SC-02H
[ 1/29/2019 7:35:22 PM ] Android version: 7.0
[ 1/29/2019 7:35:22 PM ] PDA version: SC02HOMU1BQC4
[ 1/29/2019 7:35:23 PM ] CSC version: SC02HDCM1BQC4
[ 1/29/2019 7:35:23 PM ] Phone version: SC02HOMU1BQC4
[ 1/29/2019 7:35:23 PM ] Product code: SM-G935DZBAXXV
[ 1/29/2019 7:35:24 PM ] CSC country code: VIETNAM
[ 1/29/2019 7:35:24 PM ] CSC sales code: XXV
[ 1/29/2019 7:35:25 PM ] Phone SN: RF8HC1PBPKK
[ 1/29/2019 7:35:25 PM ] IMEI: 356817075817855
[ 1/29/2019 7:35:26 PM ] HW version: REV0.4
[ 1/29/2019 7:35:26 PM ] RF cal date: 2016.12.15
[ 1/29/2019 7:35:26 PM ] Chip name: MSM8996
[ 1/29/2019 7:35:27 PM ] Modem board: MSM8996
[ 1/29/2019 7:35:27 PM ] Security patch: 2017-03-01
[ 1/29/2019 7:35:28 PM ] Boot Warranty bit: 1
[ 1/29/2019 7:35:28 PM ] SIM State: ABSENT
[ 1/29/2019 7:35:32 PM ] Rebooting phone... OK
[ 1/29/2019 7:35:37 PM ] Waiting ADB device... OK
[ 1/29/2019 7:36:21 PM ] Waiting for device to become ready... OK
[ 1/29/2019 7:36:24 PM ] Initialization zTool... OK
[ 1/29/2019 7:36:25 PM ] Running zTool, please wait... OK
[ 1/29/2019 7:36:32 PM ] Reading data from phone... OK
[ 1/29/2019 7:36:41 PM ] Searching Ramdump interface... COM4 detected
[ 1/29/2019 7:36:54 PM ] Reading data from phone... OK
[ 1/29/2019 7:37:00 PM ] Calculating... OK
[ 1/29/2019 7:37:06 PM ] Searching server... OK
[ 1/29/2019 7:38:40 PM ] Waiting for server answer... error (1)

tried with other frimwares also no results

1/29/2019 8:15:27 PM ] Operation: Read Codes via Server
[ 1/29/2019 8:15:27 PM ] Selected model: SC-02H
[ 1/29/2019 8:15:28 PM ] Selected port: COM77 USB Serial Port
[ 1/29/2019 8:15:28 PM ] Software version: 34.8
[ 1/29/2019 8:15:28 PM ]
[ 1/29/2019 8:15:29 PM ] Checking Login and Password... OK
[ 1/29/2019 8:15:31 PM ] Ballance: 20 crd.
[ 1/29/2019 8:15:33 PM ] You have 20 credit(s) left. This operation takes 5 credits.Continue? Yes
[ 1/29/2019 8:15:36 PM ] Waiting ADB device... OK
[ 1/29/2019 8:15:37 PM ] Reading phone info...
[ 1/29/2019 8:15:38 PM ] Model: SC-02H
[ 1/29/2019 8:15:38 PM ] Android version: 6.0.1
[ 1/29/2019 8:15:39 PM ] PDA version: FA60_SC02HOMU1APD5
[ 1/29/2019 8:15:39 PM ] CSC version:
[ 1/29/2019 8:15:40 PM ] Phone version: SC02HOMU1APD6
[ 1/29/2019 8:15:40 PM ] Product code: SM-G935DZBAXXV
[ 1/29/2019 8:15:41 PM ] CSC country code:
[ 1/29/2019 8:15:41 PM ] CSC sales code:
[ 1/29/2019 8:15:42 PM ] Phone SN: RF8HC1PBPKK
[ 1/29/2019 8:15:42 PM ] IMEI: 356817075817855
[ 1/29/2019 8:15:43 PM ] HW version: REV0.4
[ 1/29/2019 8:15:43 PM ] RF cal date: 2016.12.15
[ 1/29/2019 8:15:44 PM ] Chip name: MSM8996
[ 1/29/2019 8:15:44 PM ] Modem board: MSM8996
[ 1/29/2019 8:15:45 PM ] Security patch: 2016-01-01
[ 1/29/2019 8:15:45 PM ] Boot Warranty bit: 1
[ 1/29/2019 8:15:45 PM ] SIM State: ABSENT
[ 1/29/2019 8:15:49 PM ] Rebooting phone... OK
[ 1/29/2019 8:15:54 PM ] Waiting ADB device... OK
[ 1/29/2019 8:16:20 PM ] Waiting for device to become ready... OK
[ 1/29/2019 8:16:22 PM ] Initialization zTool... OK
[ 1/29/2019 8:16:24 PM ] Running zTool, please wait... OK
[ 1/29/2019 8:16:29 PM ] Reading data from phone... OK
[ 1/29/2019 8:16:36 PM ] Searching Ramdump interface... COM4 detected
[ 1/29/2019 8:16:50 PM ] Reading data from phone... OK
[ 1/29/2019 8:16:55 PM ] Calculating... OK
[ 1/29/2019 8:17:01 PM ] Searching server... OK
[ 1/29/2019 8:18:46 PM ] Waiting for server answer... error (1)

any help please

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