I decided to root my new S5, I've rooted a few S3s and S4s but when it comes to my S5 it decides it doesn't wanna work, I have all the drivers and kies.
This is the text I get:
<ID:0/005> Firmware update start..
<ID:0/005> recovery.img
<ID:0/005> NAND Write Start!!
<ID:0/005> FAIL! (Auth)...