Android 6.0.1 Stuck in Loop

So I flashed TWRP 3.0 on my SM-G920T and it didn't allow me to enter recovery but it was able to boot my phone.. but when I flashed TWRP 3.0.2.1 so i can install a custom rom it started doing a boot loop. I tried flashing 3.0 but now it just stays frozen on the screen.

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