类似 iTunes 的同步软件刷机自 2018 年微软关闭 Windows Phone 应用商店后，官方途径已经无法下载新应用。但通过解锁（Interop Unlock）和侧载（Sideload），依然可以安装大量应用。解锁的本质，是获取系统更高权限，允许安装未经微软签名的软件。Windows Phone 8.1 的权限体系分三层：
"While the US retreats from clean vehicle standards, the rest of the world is accelerating, and American automakers are falling behind," said Margo T Oge, a former head of the EPA, who was in post when the endangerment finding was brought in.
。heLLoword翻译官方下载对此有专业解读
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