OS 3.1.3 for iPhone and iPod Touch has released by Apple. this new update features some bug fixes and improvements such as Fix for app crashes on launch, Fixes bug for app crashes while using Japanese Kana Keyboard and Improves accuracy of reported battery level on iPhone 3GS.
OS 3.1.3 compatible for all models of iPhone and iPod Touch but DO NOT update it if you have a jailbroken iPhone / iPod Touch.
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