YOU CANNOT UNDO THIS, ITS PERMANENT. FLASHING ANYTHING UNOFFICIAL AFTER FLASHING THIS TAR WILL VOID YOUR WARRANTY
Just the NAE FULL stock tar. This post was updated and is now the same file that can be downloaded from SamMobile. Others said that they had reboot issues with the other one.
EDIT: I updated it to the same one that can be downloaded from SamMobile (2/28/14)
md5 of the tar that can be downloaded below(SamMobile): a77570534e22fce0745edb09994c84f2
md5 of the previous Tar that people had issues with: 4c18677fd81fd467ea9356b3da7274fb
Do NOT rename the tar file. Even though it may be convenient to do so, Odin may fail the md5 check for no reason.
This is NOT ROOTED. Its the original TAR file for people who need an Emergency Recovery for their phones, and dont want to wait hours for it to download from slow file hosts.
Over 2630 downloads and counting!
1. Download and Extract tar above and download Odin
2. Put phone into download mode (power off, then power button + Volume Down, then volume up when prompted)
3. Open Odin (right click > open as administrator)
4. Load stock tar into the PDA slot
5. Start flashing
6. Grab some popcorn because it will take a while