galaxy win lte (delos, korean) shv-e500l , wifi issues

[AC Question]

hey, tried all i could, but still cannot turn on wifi on my LG U+ samsung win...it tries to turn on but cannot enable... then the 'scan'and 'wifi direct' options are greyed out... had to use a special code to unlock data, and im no technician, plus i dont read korean, so i might have set something not the way it should, although i had wifi issues before entering this 319712358 code with 0821 password to access secial menu...phone is rooted...thanks