详细的更新如下：• Improves accuracy of reported battery level on iPhone 3GS
• Resolves issue where third-party apps would not launch in some instances
• Fixes bug that may cause an app to crash when using the Japanese Kana keyboar
支持手机
• iPhone (all models)
• iPod touch (all models)
3.1.3版固件尺寸300MB，越狱用户请勿使用。
