After I restored my wife's backup to my phonethis is kind of how with the z3x box on any samsung you can just replace the imei then put back the original one and it automatically unlocks the phone. sometimes it nulls the imei and when you get to repair it, the phone becomes unlock as a "side effect". so with dfs tool you were able to imput your imei after you nulled it? or only after you installed your wife's efs backup then you repaired the imei and it stuck?