Default Samsung note 2 GT-N7105 help please

hi guys in need of a little help.

My friend has asked me to try and unlock her samsung note 2 GT-N7105 from ee/orange uk to tesco uk i have tried the *#197328640# but when i press the last hash# key nothing happens besides a message that says "not registered on network".

ill try and give you all the details i can

model number: GT-N7105
Android version: 4.4.2
baseband ver N7105BVUFNE1
kernal version 3.0.31-1935132
build number KOT49H.N7105XXUFNF2

I can confirm this phone is not stolen also im not sure if the phone came with 4.4.2 stock or if it was updated at a later date

i know the method i tried above works on this model phone on the old jellybean 4.1.1 firmware but i think this phone has 4.4.2 kitkat which is why its not working.

So my question is, can i unlock this phone as it stands? if not could i possible downgrade it from 4.4.2 to 4.1.1 then use above method to unlock?

Thanks for your help guys really appreciate it.