trying to uninstall cyanogen mod to go to stock

Hey I am trying to uninstall cyanogen mod on my galaxy s4 so that I can return it to stock to sell it. I was following this guide techbeasts.com/how-to-unroot-samsung-galaxy-s4-all-versions/
I downloaded my firmware off of samsungs site the newest firmware available for my phone. I tried to restore it and it gave me an error about xmitdata fail so I had to unplug the phone and try again. Now if I try and boot up the phone it says firmware upgrade encountered an issue. Please select recovery mode in kies and try again. If I try and reflash it in odin I get this far now and it freezes...

<ID:0/004> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> I337MVLUGOH1_I337MOYAGOH1_I337MVLUGOH1_HOME.tar.md 5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/004> Odin v.3 engine (ID:4)..
<ID:0/004> File analysis..
<ID:0/004> SetupConnection..
<ID:0/004> Initialzation..
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> aboot.mbn



any ideas please? and thankyou!