Need help with unbricking Samsung Galaxy S6 [G920F] - stuck on boot loop

I'm completely hopeless, and all I can count on are good people from XDA to help me.

I bought a new Samsung Galaxy S6, T-Mobile version [G920F], running Android 5.1.
I used this tutorial:
http://www.droidviews.com/root-samsu...ry-all-models/

I enabled USB Debugging, downloaded latest Samsung USB drivers.

First I successfully installed TWRP 2.8.7.1, and meanwhile copied the SuperSU.zip to my device.
I had successfully entered TWRP, went to Install, and selected teh SuperSU file. It said it was done, so I went ahead and restarted my device.

Immediately, I noticed that the device was stuck on the boot logo (Galaxy S6 + Powered by Android screen).

And for some reason, when I connect the device with USB to mc PC, Windows says it's "damaged or undetected", something of that sort.
Luckily, I can still detect it in ODIN.

I might mention that I can still enter TWRP & Download Mode from the Bootloop.

I'll give any more information I can, just tell me if there is any hope for me.
Thank you so much.

S6 G920F Soft-Brick

I have an S6 wich somehow messed up when trying to root.I am on 5.1.1 and saw a video on a website on how to root it.I dont know what I got wrong or if I was being cheated but Im soft bricked,bootlooping with 'recovery is not seandroid' on screen.Unfortunately I dont have USB-Debugging active.When I tried to flash on stock rom (5.1.1 stock) with odin,it gets stuck on "Nand write started" and doesnt do anything else.I have tried flashing tons of things but none of them seem to get past the "Nand" phase.I can get to download mode but not on recovery. :crying: Can someone please help ? :(