Note 7 root failed, can't flash stock software

Hi! I've been trying to fix this for a while now and searched everywhere but can't find a solution. I've successfully rooted a note5 before, but still not too experienced with it, so bear with me.

I used odin to root my phone but it kept stalling at "SetupConnection" so I kept trying over and over again, switching the USB ports, reinstalling the drivers, but nothing. So I tried to turn the phone back on but it started going into boot recovery mode... I tried to flash the stock note 7 ap, bl, cp, and csc on odin but now it's giving me "Complete(Write) operation failed."

Please help...

Ok I somehow managed to get it to boot again, so it is completely stock, but odin still gives me the "Complete(Write) operation failed." message. Here is the full message:

Odin engine v(ID:3.1203)..
File analysis..
SetupConnection..
Initialzation..
Set PIT file..
DO NOT TURN OFF TARGET!!
Get PIT for mapping..
Firmware update start..
SingleDownload.
emmc_appsboot.mbn
lksecapp.mbn
FAIL! (Auth)

Complete(Write) operation failed.
All threads completed. (succeed 0 / failed 1)