stuck in boot loop

Newbie question here:

So I got a SM-G900t today. So far all I did was update it to 5.1.1 with Kies.

Then I changed the .tar with Odin to root it. Now it is stuck on endless boot loop, I've tried all the stuff to get out.

So I guess the .tar file was bad. How can I find the stock .tar or one that will root my phone?

Thanks
Chris