sm g920t1 s6 unlocking failed

Welcome to Octoplus/Octopus Box Samsung software version 2.1.7
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To connect SM-G920T1 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.
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Platform: Samsung Android
Selected port: COM23
Selected model: SM-G920T1
Searching for a phone. Please wait…
Phone found.
Firmware compiled date: Tue Mar 31 04:30:13 KST 2015
PDA version: G920T1UVU1AOCH
CSC version: G920T1TMB1AOCH
SW version: G920T1UVU1AOCH
Phone IMEI: Unknown
Phone SN: R58G626X8EB
Android version: 5.0.2 (LRX22G)
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Read code operation:

Platform: Samsung Android
Selected port: COM23
Selected model: SM-G920T1
Detected phone model: SM-G920T1
Firmware compiled date: Tue Mar 31 04:30:13 KST 2015
PDA version: G920T1UVU1AOCH
CSC version: G920T1TMB1AOCH
SW version: G920T1UVU1AOCH
Phone SN: R58G626X8EB
Android version: 5.0.2 (LRX22G)
Checking Root:
Phone is Rooted.
Reading security backup, please wait…
Backup saved as C:\Program Files\Octoplus\Octoplus_Samsung
\BACKUP\Security-SM-G920T1-Unknown12-01-2016_15-50-54-.asec
file
Deactivating MSL…
Executing exploit…
Executing exploit failed
Read codes failed
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unlock log:

Platform: Samsung Android
Selected port: COM23
Selected model: SM-G920T1
Detected phone model: SM-G920T1
Firmware compiled date: Tue Mar 31 04:30:13 KST 2015
PDA version: G920T1UVU1AOCH
CSC version: G920T1TMB1AOCH
SW version: G920T1UVU1AOCH
Phone SN: R58G626X8EB
Android version: 5.0.2 (LRX22G)
Checking Root:
Phone is Rooted.
Reading security backup, please wait…
Backup saved as C:\Program Files\Octoplus\Octoplus_Samsung
\BACKUP\Security-SM-G920T1-Unknown12-01-2016_15-52-02-.asec
file
Deactivating MSL…
Executing exploit…
Executing exploit failed
Phone unlocking failed

help please support team…….:rolleyes: