I have purchased software along with KONTROL S4 MK3 which is registered and I want to update to TRAKTOR S4.
only by purchasing upgrade
Have you bought your S4 Mk3 just now or some month back (before TP4 was released)? If you just bought it and bought it new (and not used) you need to contact support to get TP4. If you bought it used or several months ago you most likely have to buy the upgrade.