Need serious help unrooting/fixing my Samsung Galaxy S3 SGH-1747

[devito35]

I have a Samsung Galaxy S3 AT&T and for about a year and a half always wanted to root it but had no idea how. I had an iPhone a while back and used to jailbreak it I became an expert at it. Rooting is not so easy compared at least with the problems I've been experiencing :'(
I started by watching hundreds of root videos and ended up rooting it with Odin and Kit Kat tar file im not sure of the specific file but I'm almost 100% it was my version 4.4.2 that I flashed.
After I did this I downloaded the basics and tried to get TWRP but gooManager wasnt working for some reason.
I tried to flash the Cyanongen 11 onto my phone using the installer for the comp and on google play store and it worked up until the end I got the dead droid symbol for a bit and it finished downloading to show the "ROM may flash stock recover on boot. Fix?" error message and I selected no and "Root Access Possibly Lost Fix?" I also selected no. My phone booted with no custom rom still rooted and most of my apps are unresponsive and close randomly except facebook and youtube.
I decided I wanted to return it to stock rom and try again but when I downloaded the stock tar file and tried to flash it I got this
I'm not sure what to do because I cant return it to stock rom, clockmod recovery has stopped working, and every video I watch about how to fix it is only making it worse.
If you have any idea what I can do or what I'm doing wrong let me know.

 

[raazman]

Try this: How to Install CyanogenMod on the Samsung Galaxy S III (AT&T) ("d2att") - CyanogenMod

 

[devito35]

I'd rather just reboot my phone to the stock rom I don't even know if I want to continue messing with roms and rooted options until I do extensive research on it because I had close calls to potentially bricking my phone. Do you know why I got that error message on Odin or how to fix it?

 

[The_Ab5trakt]

There are a few ways to root your device. This is how I did it:

- Download latest version of Odin: Odin

-Download latest Philz Touch Recovery d2lte .tar.md5 file onto your computer: Philz Touch Recovery d2lte

-Download SuperSU and copy it to the sdcard of your phone: SuperSU

-Open Odin on your computer.

-Turn off phone.

-Put phone in Download Mode by pressing Volume Down+Home Button+Power Button at same time.

-Connect phone to computer with USB cord and let computer install drivers if needed.

-In Odin, make sure Auto-Reboot is unchecked and PDA is checked.

-Click on PDA and select the Philz .tar.md5 file so it shows in the PDA section.

-Click install and wait until it says 'Pass!'. Once it does, phone is rooted.

-After it says 'Pass!', disconnect your phone>take out the battery>put battery in phone>reboot into recovery by pressing Volume Up+Home Button+Power Button at the same time.

-When in Recovery Mode, find the SuperSu file in the sdcard and install it.

-After installing SuperSU, select 'Reboot Phone' and now you're rooted in your stock ROM with SuperSU.

-If you want to flash a ROM, choose the ROM you want to install and download it. Then, reboot into Recovery Mode and install it.