iOS 4.0.1 for iPhone 3G 4.0.1 Software Free Download

Create custom playlists right on your iPhone.

5x digital zoom
Get closer to your subjects by zooming in up to 5x.

Tap to focus video
While shooting video, tap the display to choose where to focus.

Faces and Places in Photos
View photos based on who’s in them and where they were taken

Home screen wallpaper
Change the background wallpaper on your Home screen.

Gift apps
Send apps as gifts to your friends or family.

Spell checking
A built-in dictionary automatically suggests words and corrects spelling. It works in Mail, Notes, and other apps.

Wireless keyboard support
Pair a keyboard based on bluetooth wireless technology with your iPhone.

This updated contains bug fixed and improvements, including the followings:
-Improve the formula to determine how many bars of signal strength to display.