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    <title>Firefly开源社区 - AIO-3399J</title>
    <link>https://dev.t-firefly.com/forum-276-1.html</link>
    <description>Latest 20 threads of AIO-3399J</description>
    <copyright>Copyright(C) Firefly开源社区</copyright>
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    <lastBuildDate>Tue, 21 Apr 2026 21:33:21 +0000</lastBuildDate>
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      <title>制作ubuntu文件系统，桌面无法启动的问题，求助解答</title>
      <link>https://dev.t-firefly.com/thread-13516-1-1.html</link>
      <description><![CDATA[文件系统是从AIO-3399J 固件中解析出来的 ubuntu1604arm64-rootfs.img，重新制作文件系统的命令如下
dd if=/dev/zero of=linuxroot.img bs=1M count=2800sudo  mkfs.ext4  linuxroot.imgmkdir  rootfssudo mount linuxroot.img rootfs/sudo cp -rfp temp/*  rootfs/sud ...]]></description>
      <category>AIO-3399J</category>
      <author>zhaoshichao</author>
      <pubDate>Tue, 03 Apr 2018 09:52:37 +0000</pubDate>
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    <item>
      <title>3399j开发板如何识别usb接口的DAC解码</title>
      <link>https://dev.t-firefly.com/thread-13438-1-1.html</link>
      <description><![CDATA[刚入手3399j开发板的新手.小白萌新求教各位老大，这板子如何才能让USB输出纯数字音频信号进入DAC解码器呀！试了都不识别DAC毫无反应。看了还有I2S输出，但是上面的输出脚位代号与DAC上的不符。真不知道怎么玩了。求教各位老大....感谢感谢！！！]]></description>
      <category>AIO-3399J</category>
      <author>foreverPanda</author>
      <pubDate>Tue, 13 Mar 2018 15:23:18 +0000</pubDate>
    </item>
    <item>
      <title>固件太大，是我编的问题？</title>
      <link>https://dev.t-firefly.com/thread-13430-1-1.html</link>
      <description><![CDATA[编译AIO-3399J的固件，生成的update.img有1.2G左右，正常吗？]]></description>
      <category>AIO-3399J</category>
      <author>zhangxd19911005</author>
      <pubDate>Tue, 13 Mar 2018 02:54:32 +0000</pubDate>
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