Can I get some help unrooting am AT&T Samsung S4?

[AC Question]

Problem unrooting a at&t Samsung S4

I am trying to unroot my phone with odin I downloaded a firmware package from sammobile titled (I337UCUAMDL_I337ATTAMDL_I337UCUAMDL_HOME.tar.md5)
And my phone is a samaung galaxy S4 from AT&T
Model #SAMSUNG-SGH-I337
Android version 4.2.2
Baseband Version I337UCUAMF3
Build Number JDQ39.I337UCUAMF3

In Odin it Fails and this it what it says I will pate it in here

<ID:0/005> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> I337UCUAMDL_I337ATTAMDL_I337UCUAMDL_HOME.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> SetupConnection..
<ID:0/005> Initialzation..
<ID:0/005> Get PIT for mapping..
<ID:0/005> Firmware update start..
<ID:0/005> aboot.mbn
<ID:0/005> NAND Write Start!!
<ID:0/005>
<ID:0/005> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)
<ID:0/005> Removed!!



Please Help