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1、Firmware downloaded from popular software developed by Apple for various operating systems (music player and music manager developed by Apple for use on computers with iPod) is stored in Windows 7 computer: C:\ User \ User name \ AppData \ Roaming \ Apple computer \iTunes\iPhone software update XP computer: C:\ Documents and settings \ User name \ Application data \ Apple Computer \iTunes\iPhone Software Update WindowsVista Computer: C:\ User \ User Name \ Appdata \ Roaming \ Apple Computer \ iTunes \ iPhone Software Update Tip: User name is usually: Administrator.

2、连接计算机并选择恢复。当然不是，除非你在威锋上选择用户自制固件。

3、5.0.1的验证已关闭。没有5.0.1的SHSH，无法升级5.0.1，会得到错误3194。否则根本无法升级。5.1越狱快开始了，赶紧越狱吧，未雨绸缪。5.1快到了！

本文到此结束，希望对大家有所帮助。