How can I revert back to 4.4.2 without Odin?

A

AC Question

I cannot revert back to 4.4.2

So my ATT Galaxy s5 updated the other day to 4.4.4 and ever since I cant connect to the network, my phone overheats, and the battery drains very quickly. I am trying to revert back to 4.4.2 through Odin by using a file that I downloaded from Sammobile. I am sure I downloaded the correct model. However, when I try to use Odin, the followin error comes up:
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> G900AUCU1ANCE_G900AATT1ANCE_G900AUCU1ANCE_HOME.tar.md5 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> SingleDownload.
<ID:0/004> aboot.mbn
<ID:0/004> NAND Write Start!!
<ID:0/004> FAIL! (Auth)

Does anyone know the solution for this? Or how can I go back to 4.4.2 without Odin?
 

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