I have installed this firmware: http://www.sammobile.com/firmwares/download/58887/N910FXXU1COJ3_N910FBTU1COI1_BTU/ from sammobile
I have a note 4 that is unlocked and based in the UK, it was purchased new off amazon. My original CSC code was BTU but my active one is XEC/BTU. Should I be worried and should I try to change it.
When I type the serial number into kies I am told PDA: OK2/ CSC: OJ2/ PHONE: OK1 (XEC). However XEC is for spanish phones which mine is not.
How can I get my device back to its original state when it was first purchased?