Exclamation [Q] SGS4 -i537 AT&T softbrick fix plz

So I rooted my friends new AT&T I537 he just got a week ago and then went to install Teamwin recovery after I installed safestrap and then things fell apart. Im not sure what happened but now I can only power on and get to the Samsung screen with the little lock thats now unlocked but it just powers off. I can put the phone into download mode for Odin if someone can direct me to the right files to use to restore it. I can also go into standard recovery mode once and a while. Any help here would be great as its not my phone lol.