how to unlock t337t

Welcome to Octoplus/Octopus Box Samsung software version 2.2.4
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To connect SM-T337T 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 Calculator application. Enter "(+30012012732+" number, to get
phone dial window.
7. Enter "*#0808#" number.
8. Select "DM+Modem+ADB".
9. Press Home button.
10. Go to dial window.
11. Enter "*#9090#" number.
12. Set "Diag config" to "[1]DM/DUM over HS-USB" value.
13. Restart phone.
14. Press "Read Info" in software.
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Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Phone was not found on the selected port!
Searching for USB diagnostic port…
Connecting to phone on COM79
Mode: Emergency
Phone connection failed
No diagnostic ports found!
Connecting to phone on COM8
Phone connection failed
Performed by 2.2.4 software version
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Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Please, press "OK" button on the phone to allow USB debugging..
Operation was canceled
Performed by 2.2.4 software version
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Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Please, press "OK" button on the phone to allow USB debugging..
Detected phone model: SM-T337T
Firmware compiled date: Wed Jun 18 23:04:46 KST 2014
PDA version: T337TUVU1ANF4
CSC version: T337TTMB1ANF4
SW version: T337TUVU1ANF4
Phone IMEI: 355580060277839
Phone SN: RF2FC08FZEV
Android version: 4.4.2 (KOT49H)
Country: USA
HW platform: msm8226
HW Chip: MSM8926
HW Modem: MSM8926
Codename: milletltetmo
Updating DIAG confing…
DIAG confing is succesfully enabled.
Performed by 2.2.4 software version
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Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Reading info, please wait…
Detected phone model: SM-T337T
Firmware compiled date: Wed Jun 18 23:04:46 KST 2014
PDA version: T337TUVU1ANF4
CSC version: T337TTMB1ANF4
SW version: T337TUVU1ANF4
Phone IMEI: 355580060277839
Phone SN: RF2FC08FZEV
Android version: 4.4.2 (KOT49H)
Country: USA
HW platform: msm8226
HW Chip: MSM8926
HW Modem: MSM8926
Codename: milletltetmo
Performed by 2.2.4 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Reading info…
Phone was not found on the selected port!
Phone unlocking failed
Performed by 2.2.4 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Reading info…
Phone was not found on the selected port!
Phone unlocking failed
Performed by 2.2.4 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Reading info…
Phone was not found on the selected port!
Phone unlocking failed
Performed by 2.2.4 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM1
Selected model: SM-T337T
Reading info…
Phone was not found on the selected port!
Phone unlocking failed
Performed by 2.2.4 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM8
Selected model: SM-T337T
Reading info…
Phone was not found on the selected port!
Phone unlocking failed
Performed by 2.2.4 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM8
Selected model: SM-T337T
Phone was not found on the selected port!
Searching for USB diagnostic port…
Connecting to phone on COM79
Mode: Emergency
Phone connection failed
No diagnostic ports found!
Connecting to phone on COM8
Phone connection failed
Performed by 2.2.4 software version