why i can't install knox.

[Jhonson Woo]

I root my s5 6.0.1 doesn't susses. Root failed.Firmware is broken down and then i set up new 5.0.1 official firmware.but can not install knox
My knox can not be installed because a coustom os has previously been installed on this device. How can i do help me please.

 

[anon(632115)]

You probably tripped Knox while rooting so you can forget Knox ever running again if this is the case. Booting into Odin mode should show your Knox status. 0x1 means its tripped