T399n help with efs and NV data

Hello fellow unlockers and supporters, i have a big problem for this t399n i received to repair network i tried to repair via imei repair in z3x lattest samsung pro 25.5, i also did patch certificate as well tried different firmware, still no luck, followed all the guides on this site and still i cannot get network the phone is new, customer say it was done by another unlocker when he got to unlock the phone, can someone help and give me new efs backup? i am in Jamaica.