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https://qooah.com/2014/01/26/motorola-%e4%bf%ae%e5%be%a9%e5%9b%ba%e4%bb%b6%e6%bc%8f%e6%b4%9e%e5%86%8d%e6%ac%a1%e9%96%8b%e6%94%be-android-4-4-%e5%8d%87%e7%b4%9a/
Motorola 修復固件漏洞再次開放 Android 4.4 升級