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同事的 2011 款 Macbook Pro，升级到 Sierra WIFI 信号变差了，百撕不得其姐。

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  •   lihua · Feb 21, 2017 · 1557 views
    This topic created in 3389 days ago, the information mentioned may be changed or developed.
    升级之前正常。
    升级之后，放在无线路由器边上，才能连上网络；隔着一堵石膏墙就连不上了，提示居然是“密码无效”。
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    升级sierra石膏MacBook
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