To connect SM-N920W8 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.
Platform: Samsung Android
Selected port: COM3
Selected model: SM-N920W8
To put SM-N920W8 into Download Mode, You have to perform the following steps:
1. Reconnect the battery.
2. Press and hold "Volume-" + "Home" + "Power ON" keys.
3. When phone turns on, press "Volume+" key.
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Resetting FRP lock..success
Resetting EE lock..success
Resetting Samsung Account lock..success
Operation was failed!
Performed by 2.2.5 software version
It’s on 6.0.1