Open Installer, go to All Packages, and then install “Summerboard” (Version 3.0 if you’re on 1.1.1 or 1.1.2; or, “Summerboard Old” if you’re on firmware version 1.0.2). Restart your iPhone. Summerboard is a program that will let you download themes and change your iPhone’s wallpaper. 2. Next, launch Summerboard (the icon reads SMBPrefs) from your Springboard. Go to Theme, and select one of the provided themes. If you want to use the theme wallpaper, go to Theme Wallpaper and change the box to “On”. Otherwise, your chosen wallpaper will be your background.