Flashing a new firmware will trip knox flag?

Hello guys, i'v got a brand new s6 sm-g920f. My fw version now is G920FXXU2POFJ and i would like to manually upgrade via Odin to G920FXXU2COH2 because i dont have OTA update. My only question is will i trip KNOX? Its important for me because i'm planing to use Samsung pay.. Thanks for your time helping me.