trying to root Note 4 5.1.1 on 910W8

Hey guys i followed this youtube guide for rooting 5.1.1 using TWRP Method https://www.youtube.com/watch?v=qpsGX_Xoxcg

i downloaded all the files but the firmware (not listen i have n910W8 = telus)

I have odin, supersu, TWRP (which n910w8 is listed) and samsung drivers.

I moved superSU and the TWRP file to root directory of note 4 5.1.1. rebooted into download mode, saw the blue indicator on odin and loaded the file. Rebooted holding volume up this time and tried to load the kernal but it doesnt exist.

I think im confused the TWRP file is NOT the kernal? Where can I get a kernal for n910W8 (telus)

thanks in advance!!