How to Unlock LG Ls997

Welcome to Octoplus/Octopus Box LG Software version 2.9.2
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Checking data...OK
Platform: LG Qualcomm
Selected port: COM9
Selected model: H918
Reading info...Failed!
Port busy
Please, reboot the phone and try again.
Performed by 2.9.2 Software version.
Access violation at address 00000000. Read of address 00000000
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Platform: LG Qualcomm
Selected port: COM9
Selected model: H918
Reading info...Failed!
Port busy
Performed by 2.9.2 Software version.
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Platform: LG Qualcomm
Selected port: COM105
Selected model: H918
Reading info...
Could not detect mode!
Performed by 2.9.2 Software version.
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Checking data...OK
Platform: LG Qualcomm
Selected port: COM105
Selected model: LS997
Reading info...
Initializing ADB...OK
Waiting for phone...OK
Model ID: LG-LS997
Phone firmware version: LGLS997AT-00-V20a-SPR-US-JUL-17-2018-
ARB01+03
Short firmware version: V20a
Kernel version: 3.18.71-perf+ (lgmobile@LGEACI5R9) (gcc version 4.9.x
20150123 (prerelease) (GCC) ) #1 SMP PREEMPT Tue Jul 17 14:44:34 KST
201
Android version: 8.0.0
Hardware: Qualcomm Technologies, Inc MSM8996 0
Unlock operation is currently not supported for your phone's firmware.
Sending exploit...OK
Executing exploit...OK
Unlocking...
Phone successfully unlocked!
Rebooting phone...
Performed by 2.9.2 Software version.
Connecting to server support2.octoplusbox.com:82...OK
Authorizing...OK
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Checking data...OK
Platform: LG Qualcomm
Selected port: COM105
Selected model: LS997
Reading info...
Initializing ADB...OK
Waiting for phone...OK
Model ID: LG-LS997
Phone firmware version: LGLS997AT-00-V20a-SPR-US-JUL-17-2018-
ARB01+03
Short firmware version: V20a
Kernel version: 3.18.71-perf+ (lgmobile@LGEACI5R9) (gcc version 4.9.x
20150123 (prerelease) (GCC) ) #1 SMP PREEMPT Tue Jul 17 14:44:34 KST
201
Android version: 8.0.0
Hardware: Qualcomm Technologies, Inc MSM8996 0
Unlock operation is currently not supported for your phone's firmware.
Sending exploit...OK
Executing exploit...OK
Unlocking...
Phone successfully unlocked!
Rebooting phone...
Performed by 2.9.2 Software version.
Cannot call Start on a running or suspended thread

downgrade maybe big risk,any solution for 8.0 Ls997

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