Help working firmware

[Hawkeye8891]

does anyone know where i can get an actual working file for my SM-J327P ? ive tried so many and they all fail the verification. im not real used to odin, every site that has step by step for odin just to dumb it down for ppl like me are all different and none of the ways have worked. all the custom roms i actually got working didnt have working wifi... someone has got to know a way. i tried using kies, then samsung switch then odin again but for some reason im not putting the ap, bl and other files right or something. ive gotten plenty of really good information from ppl on here but i still havnt found a sure fire way... thanks guys. hopefully one of you can help