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苹果系统降级怎么做
更新时间: 2020-11-04 00:00:00  

1、用数据线将设备连接上最新版iTunes,再打开iTunes。

2、按住键盘上Shift,同时点击iTunes的“更新”功能;

3、根据iTunes弹出对话窗,选择对应版本的iOS固件(前提是下好你需要的固件),点击更新即可。

关键词: 苹果 系统 降级 怎么

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