change labels text,and button background from another viewcontroller in ios

i'm having an profile update page to set new names and images when they change from that page i want to come back and without logout and see changes in profile page

how can i achieve from that update page

sorry for my english and i'm new to iOS

i'm having a dashboard in that i'm having profile button when clicking on it will goes to profile settings view and when i change and click on back button in navigation controller nothing changes in dashboard