<div layer1="img-s"></div><div class="tz-figure"><img src="http://club2.autoimg.cn/album/g5/M15/3E/3F/userphotos/2021/04/24/16/500_ChxkkGCD0bqAfuY5AAA2uBhve84337.jpg" style="height:141px;width:700px"  /><div layer2="desc-s"></div><div class="description">U盘&nbsp;根目录已放置了固件包。不知道目录放置是否合规</div><div layer2="desc-e"></div></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-figure"><img src="http://club2.autoimg.cn/album/g5/M11/3E/3A/userphotos/2021/04/24/16/500_ChxkkGCD0T2AOgB_ABs6lG5rer0482.jpg" style="height:393px;width:700px"  /><div layer2="desc-s"></div><div class="description">现在是0228固件</div><div layer2="desc-e"></div></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-figure"><img src="http://club2.autoimg.cn/album/g5/M13/72/26/userphotos/2021/04/24/16/500_ChwEl2CD0T2AcWkRABIJRKqpI1E197.jpg" style="height:393px;width:700px"  /><div layer2="desc-s"></div><div class="description">切换媒体源为U盘，会提示&nbsp;存在软件更新数据</div><div layer2="desc-e"></div></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-figure"><img src="http://club2.autoimg.cn/album/g8/M00/94/6F/userphotos/2021/04/24/16/500_ChwEmmCD0T2ACGoVAAuN6goSHpE839.jpg" style="height:393px;width:700px"  /><div layer2="desc-s"></div><div class="description">系统点点软件更新&nbsp;无法识别到更新文件</div><div layer2="desc-e"></div></div><div layer1="img-e"></div><br /><div layer1="text-s"></div><div class="tz-paragraph">文件放到U盘里的还是提示没有可用文件。怎么解决？<br /></div><div layer1="text-e"></div><br />

下载了276b导航0333的固件,升级步骤怎么操作,有什么要注意的？