Could not do normal boot Odin Mode

[AC Question]

I started off trying to install a custom Mod and ended up just trying to get my phone back to normal. Right now it turns on and everything works, but if I go into recovery mode then it gives me "Could No Do Normal Boot \ Odin Mode". Also when it boots up it says "Samsung custom" and has an unlocked lock. I'm thinking I need to install the original bootloader, but I'm not sure which one it is or where to get it. I'm running 4.4.2 i337 at&t