Please read all of the instructions before starting.

开始升级之前，请阅读所有的这些指示说明。

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Please read all instructions and warnings before use.

在使用之前，请读所有的说明和警告内容。

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Please read all instructions carefully before operation and understand the content correctly.

操作前仔细阅读所有说明，正确理解所有的内容。

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Please read all instructions carefully before operation and understand the content correctly.

操作前仔细阅读所有说明，正确理解所有的内容。

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