N7100 root


plz how can i root n7100/e250l samsung

Welcome to Octoplus/Octopus Box Samsung software version 2.1.9
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To connect GT-N7100 phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->Developer options.
3. Turn on "USB Debugging" option.
4. When message is appear press "Yes".
5. Connect usb cable to phone.
6. Go to dial window.
7. Enter *#9090# number.
8. Set speed to 115200.
9. Go to dial window.
10. Enter "*#7284#" number.
11. Set "UART" radio button to "MODEM" value.
12. Set "USB" radio button to "PDA" value
13. Press "Read Info" in software.
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Platform: Samsung Android
Selected port: COM8
Selected model: GT-N7100
Searching for a phone. Please wait…
Please, press "OK" button on the phone to allow USB debugging..
Phone found.
Please, press "OK" button on the phone to allow USB debugging..
Please, press "OK" button on the phone to allow USB debugging..
Firmware compiled date: Mon Mar 3 15:31:59 KST 2014
PDA version: N7100XXUENC1
CSC version: N7100OJVENB1
SW version: Unknown
Phone IMEI: Unknown
Android version: 4.3 (JSS15J)
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Platform: Samsung Android
Selected port: COM8
Selected model: GT-N7100
Searching for a phone. Please wait…
Please, press "OK" button on the phone to allow USB debugging..
Phone found.
Please, press "OK" button on the phone to allow USB debugging..
Please, press "OK" button on the phone to allow USB debugging..
Firmware compiled date: Wed May 21 20:39:16 KST 2014
PDA version: N7100XXUKNE6
CSC version: E250LLGTKNF7
SW version: E250LKLUKNDA
Phone IMEI: 35451605899815
Android version: 4.4.2 (KOT49H)