Root [AT&T] Unrooting issues

[iloveguy]

Ok so I've been trying to unroot my phone for the past 2 days and I keep getting a FAIL in Odin. I have tried new cables, tried plugging the usb in the back of the computer, tried different computers, different firmware, odin, and drivers and I keep getting a fail! On my phone the error says SV Rev. Check fail: fused: 4, Binary: 1 and on Odin it says

Get Pit for mapping...
Firmware update start...
aboot.mbn...
NAND write start..
Complete(Write) operation failed..
All threads completed (succeed 0/failed 1)

Someone please help me! Something so simple is really frustrating me. I have a Galaxy S4 SGH-I337 btw. Let me know. Thanks!

 

[mothepta]

Finally, I've found someone with my exact same issue. Please help!

SGH-I337 (at&t)
4.3
Device status: custom
rooted

Basically, it will not allow flashing of 4.2.2 stock roms so that one could update to 4.4 or restart the custom rom process, unfettered by the 4.3 KNOX prevention system.

Thank you for your help!