Phone is stucked in "Galaxy Note 5" screen

Hi,

I've been very disappointed with the battery life of this note 5 since it upgraded to 6.0. So I've decided to root it so I could install a custom rom and kernel.

I've followed this guide here:

http://forum.xda-developers.com/tmob...-root-t3187422

And now my phone won't boot at all!

I think I followed the wrong guide? The kernel I installed was "Noble_Kernel_Auto-Root_N920T_v0.1_Rebuid3.tar.md5"

I've managed to install TWRP and have access to it so I tried to flash a different kernel (arter97-kernel-n920tw8-4.3), but still the phone won't boot.

What can I do to fix this issue?

Thanks!