Samsung L720T 5.0.1 how to unlock? always error. please help!


Hello team octopus box, this is my second L720T that I cannot unlock because of the 5.0.1 android version. Until now this is my issue with octopus box, please need your help. thank you

Samsung L720T SW version: L720VPUG0K3 android verison: 5.0.1
but won’t detect via octopus box!

DEBUG is ON

CP LOGGER is ON

DM + MODEM + ADB is ON
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Welcome to Octoplus/Octopus Box Samsung software version 2.3.7
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To connect SM-N910T phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Build number" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
6. Go to dial window.
7. Enter "*#0808#" number.
8. Select "DM+Modem+ADB".
9. Press Home button.
10. Restart phone.
11. Press "Read Info" in software.
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Platform: Samsung Anycall
Selected port: COM219
Selected model: 707SC
Phone was not found on the selected port!
Searching for USB diagnostic port…
Connecting to phone on COM219
Mode: Emergency
Phone connection failed
No diagnostic ports found!
Connecting to phone on COM5
Port is busy
Performed by 2.3.7 Software version.
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Platform: Samsung Anycall
Selected port: COM219
Selected model: 707SC
Mode: Emergency
Phone was not found on the selected port!
Searching for USB diagnostic port…
Connecting to phone on COM219
Mode: Emergency
Phone connection failed
No diagnostic ports found!
Connecting to phone on COM5
Phone connection failed
Selected action can’t be performed
Performed by 2.3.7 Software version.
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Platform: Samsung Android
Selected port: COM219
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Android
Selected port: COM219
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Android
Selected port: COM219
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Android
Selected port: COM221
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Android
Selected port: COM220
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Android
Selected port: COM222
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Anycall
Selected port: COM220
Selected model: SPH-L720T
Mode: Normal
Phone model: SPH-L720T
Firmware compiled date: Feb 17 2015
Firmware compiled time: L720.08
Firmware released date: Nov 18 2015
Firmware released time: 18:03:26
Phone IMEI: 990003-51-519137-3
SW version: M9615A-CEFWTAZM-4.0.17192
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Android
Selected port: COM220
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.
———————————————————————————–
Platform: Samsung Android
Selected port: COM220
Selected model: SPH-L720T
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Can’t detect android kernel version.
Phone unlocking failed
Performed by 2.3.7 Software version.