视频中所用工具：谷歌Nexus 7 解锁|ROOT|Recovery|刷机 必备工具 Nexus Root Toolkit(更新最新版) 04：00 操作的的是备份 05：00 操作的是解锁;点击OK!平板屏幕上选择Yes!
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将建模项目更新为最新版本。
首先，手机厂商和无线运营商之所以迟迟不愿将手机的操作系统更新为最新版本，是因为他们想卖新手机，而不是让顾客一直用旧手机。
Manufacturers and carriers aren't motivated to update their handsets to the latest version of their OS because they want to sell new handsets, not keep their customers on old ones.
并且，当然，许多软件包也已被更新到最新版本。
And, of course, many software packages have been updated to more recent versions.
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