after root my knox not working. then i unroot my phone.but knox still not working...how i do now?plz someone help me

i root my phone .but my phone has come no update because my phone status change official to custom and my secure folder not working that's why i need too unroot and change device status custom to official . plz anybody tell me how i do this?

my display glass broken!if I'll change my display,my water resistance will work???

what will be change in this update?

What will this update change?