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苹果7iOS11降级失败怎么办
更新时间： 2020-09-13 00:00:00  

下载安装并打开itunes；让手机进入恢复模式；先长按住电源键，出现关机选项时，滑动关机；随后再按电源键开机，屏幕会出现苹果标志，不要松开电源键；接着再按住主屏Home键，直到屏幕黑屏；当屏幕黑屏时，松开电源键，继续按住主屏Home键不要松开，直到电脑端的iTunes出现检测到一个处于恢复模式的iPhone；点击恢复iphone，等待itunes下载最新固件并安装后，iphone会自动开机，完成激活就可以使用。

关键词： 苹果 7ios11 降级 失败 怎么办

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