some screen not show after techinical patch update in ecc6

hello friends

In my server after updatation atechinical patch some my old screen not show, in place of old zscreen a sap default screen will show, now i want to old zscreen, please say me how i do, second some one say that u run sgen tcode but i not familiyar with this t code please any one help in this issue

nainesh suthar