Galaxy S3 Fails with odin multiple times what to do?

Hey my gs3 is stuck at boot samsung Galaxy S3 screen after trying to install cynagenmod 11 i can get it into download mode but every time i use odin3 it instantly fails

this is what it says :

<ID:0/004> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> I747UCDLK3_I747ATTDLK3_I747UCDLK3_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> aboot.mbn
<ID:0/004> NAND Write Start!!
<ID:0/004> FAIL! (Auth)
<OSM> All threads completed. (succeed 0 / failed 1)

then on the phone screen it has

ODIN MODE
Product name SGH-I747
Current binary Official
System Status Custom
Qaulcomm secure boot enable
Warrenty Bit 1
Bootloader RP Srev 3
SwRev check Fail: Fused 3 Binary 0

i have Galaxy S3 att

no matter what i do i aleays get fail in after aboot in odin...

i hope some one knows how to fix this !!!

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