Fubar'd my s6 edge Help please?

So I tried going from atrium to alliance and got stuck in a bootloop of hell I guess..

I can boot into download mode but my odin seems useless because I don't even know how to reflash twrp through it.



That's me trying and failing to flash stock whatever to it.

Knox is tripped void.

Product name sm-g925T
Current binary Custom
System Status Custom
FAP Lock: Off

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What I've done so far:

Tried flashing BL/CP from Atrium to get it to be able to boot into recovery by putting the twrp into AP

Didn't work. I can't boot into twrp it all

All it ever does now is sit at the samsung galaxy s6 edge powered by android screen but I can get into download mode.

Can someone please give me a list of steps to rescue my phone from this hell? And tell me why all these odin things for twrp don't list step by step?

Sorry I'm just stressed out to the max right now and this isn't simple unbricking like my nexus was :/