how to fix galaxy s7 odin fail (auth) and sw rev check fail sysem fused 2 >binary 1

so recently I tried to downgrade my galaxy s7 to a stock firmware via odin, every time i try to do it, I get this on odin
<ID:0/007> Added!!
<ID:0/007> Odin engine v(ID:3.1101)..
<ID:0/007> File analysis..
<ID:0/007> SetupConnection..
<ID:0/007> Initialzation..
<ID:0/007> Get PIT for mapping..
<ID:0/007> Firmware update start..
<ID:0/007> SingleDownload.
<ID:0/007> boot.img
<ID:0/007> NAND Write Start!!
<ID:0/007> recovery.img
<ID:0/007> system.img.ext4
<ID:0/007> FAIL! (Auth)
<ID:0/007>
<ID:0/007> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)
and I get this on the download mode screen
sw rev check fail sysem fused 2 >binary 1
I cannot boot into recovery mode since i first tried to do the downgrade.
So can anyone help me on how to fix this problem so i can succesfully downgrade without getting any error messages

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