Windows 8.1 Update 1升级离线安装包下载，通过MSU文件来安装（按顺序）。
KB2919442: 32-Bit – 64-Bit – ARM
*KB2939087: 32-Bit – 64-Bit – ARM
KB2919355: 32-Bit – 64-Bit – ARM
KB2932046: 32-Bit – 64-Bit – ARM
*KB2938439: 32-Bit – 64-Bit – ARM
KB2937592: 32-Bit – 64-Bit – ARM
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