Many of you might have loved the new background and icons of iPhone OS 4.0 but don't want to try the new firmware as the released build is still beta. Well here is iPhone OS 4.0 theme for all iDevices having firmware other than iPhone OS 4.0. Just download and install it via WinterBorad app. If you haven't Jailbreaked your iPhone or iPod Touch yet then you can simply save the wallpaper and the dock image and apply it on your Home and Lock screen.
iPhone OS 4.0 Wallpaper And Dock
If you don't know how to install theme via WinterBoard then please follow the steps in the video tutorial given below.
Update 1: iPhone OS 4.0 Like Theme And Multitasking In OS 3.x Or Older Firmwares
Update 2: Change SpringBoard Background without Winterboard App