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    <title>Firefly Open Source Community - Firefly-RK3399</title>
    <link>https://bbs.t-firefly.com/forum.php?mod=forumdisplay&amp;fid=146</link>
    <description>Latest 20 threads of Firefly-RK3399</description>
    <copyright>Copyright(C) Firefly Open Source Community</copyright>
    <generator>Discuz! Board by Comsenz Inc.</generator>
    <lastBuildDate>Sat, 14 Mar 2026 16:44:14 +0000</lastBuildDate>
    <ttl>60</ttl>
    <image>
      <url>https://bbs.t-firefly.com/static/image/common/logo_88_31.gif</url>
      <title>Firefly Open Source Community</title>
      <link>https://bbs.t-firefly.com/</link>
    </image>
    <item>
      <title>Unstable network connection in Android Nougat because of TCP offload enabled</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2534</link>
      <description><![CDATA[Hello,

I think I\'m experiencing similar networking problems as described here and other forums.

https://github.com/Fourdee/DietPi/issues/2028

It looks like different RK3399 devices are affected, for example: NanoPi M4, RockPro64, OrangePI an ...]]></description>
      <category>Firefly-RK3399</category>
      <author>systemservice</author>
      <pubDate>Tue, 19 Feb 2019 16:23:57 +0000</pubDate>
    </item>
    <item>
      <title>GPIO App on RK3399 - Android Help</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2423</link>
      <description><![CDATA[Hi,

I\'m looking to test the GPIO pins on the RK3399 with an app on Android. I have the board setup and working great with the latest Android 8.1 installed and I\'ve been researching and found the following thread:

http://dev.t-firefly.com/forum. ..]]></description>
      <category>Firefly-RK3399</category>
      <author>Walshie1987</author>
      <pubDate>Mon, 01 Oct 2018 10:24:23 +0000</pubDate>
    </item>
    <item>
      <title>Touch Screen AIO-rk3399 14 inch</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2398</link>
      <description><![CDATA[Hi,

I recently flashed a new ROM for a 21\&quot; AIO-rk3399 by setting the KERNEL_DTS=rk3399-mid-215-android

When I update the ROM for a 14\&quot; as per the documentation I was given:

KERNEL_DTS=rk3399-mid-156-android

touch screen no longer works.  ..]]></description>
      <category>Firefly-RK3399</category>
      <author>Giltea</author>
      <pubDate>Wed, 22 Aug 2018 18:30:01 +0000</pubDate>
    </item>
    <item>
      <title>How do I factory reset the RK-3399</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2386</link>
      <description><![CDATA[Hi There,

I applied some patches to my RK-3399 dev board and it\'s now saying:

Match device type failed, stop running!

When I try and reflash the images using the android tool. 

How can I factory reset it so that it can be flashed again.
 ...]]></description>
      <category>Firefly-RK3399</category>
      <author>Giltea</author>
      <pubDate>Wed, 08 Aug 2018 16:30:56 +0000</pubDate>
    </item>
    <item>
      <title>How do you increase the system.img</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2363</link>
      <description><![CDATA[Hi there,

I am compiling the android OS and adding 5 custom apps to the build. The build is failing due to lack of space on the system.img file system. 

From the documentation it says that the limit can be increased in the parameter.txt, which  ...]]></description>
      <category>Firefly-RK3399</category>
      <author>Giltea</author>
      <pubDate>Wed, 04 Jul 2018 20:28:46 +0000</pubDate>
    </item>
    <item>
      <title>EC20 and Ubuntu 16.04</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2349</link>
      <description><![CDATA[Good day;

I have a 3399 (and AIO3399j), and EC20.

Whether I use the USB dongle, or connect the board directly to the Firefly, I am unable to get the cellular to connect.

If I use the USB dongle, and connect to my main Ubuntu system, I have n ...]]></description>
      <category>Firefly-RK3399</category>
      <author>kanderson</author>
      <pubDate>Mon, 25 Jun 2018 22:50:53 +0000</pubDate>
    </item>
    <item>
      <title>Unable to detect the device in lsusb</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2322</link>
      <description><![CDATA[Hi,

I have downloaded the Android 7.1 SDK for Firefly-rk3399 and Built it.
I successfully flashed the images on the board.Android got booted up

I enabled the Developer options --&gt; USB debugging.

When i connect the USB type-C cable from RK33 ...]]></description>
      <category>Firefly-RK3399</category>
      <author>anveshdotneeli</author>
      <pubDate>Mon, 04 Jun 2018 12:58:41 +0000</pubDate>
    </item>
    <item>
      <title>Device can not streaming from airplay</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2278</link>
      <description><![CDATA[I am trying to do airplay streaming from aspecified app, but almost all source send from iphone are failed to open onRK3399 expect the source comes from youku app.Detailed log shows as below, it looks somethingwrong while RK player got the source and ...]]></description>
      <category>Firefly-RK3399</category>
      <author>jay.chuang</author>
      <pubDate>Mon, 30 Apr 2018 02:11:44 +0000</pubDate>
    </item>
    <item>
      <title>Failed to boot</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2256</link>
      <description><![CDATA[Hi

I install android in rk3399
But it is failed to boot and displayed  only \&quot;Erasing\&quot; on screen.(Image file is \&quot;.Firefly-RK3399_Android7.1.2_MP_180126.img\&quot;.)

What is wrong? How can I fix it?

Thanks.

LOG-----------------------------------]]></description>
      <category>Firefly-RK3399</category>
      <author>yskim</author>
      <pubDate>Mon, 02 Apr 2018 04:27:06 +0000</pubDate>
    </item>
    <item>
      <title>RK3399 DisplaPort no 4K resolution</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2242</link>
      <description><![CDATA[Hi,

the RK3399 has an USB-C/DP port. 

Android reports max. resolution of 1920 x 1200 @ 60 Hz.

How to enable UHD/4K 3849 x 2160 @ 60Hz via DisplayPort on RK3399?

Thanks
fl0wtec]]></description>
      <category>Firefly-RK3399</category>
      <author>fl0wtec</author>
      <pubDate>Thu, 22 Mar 2018 10:16:39 +0000</pubDate>
    </item>
    <item>
      <title>Suitable 8MP Camera</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2240</link>
      <description><![CDATA[Hi all,

I\'ve been searching for 8MP cameras to use with the Firefly RK3399. The wiki (http://en.t-firefly.com/doc/product/info/287.html) lists the following 8MP cameras as compatible&#720; OV8825/OV8820/OV8858-Z(R1A)/OV8858-R2A. As I\'m planning to ..]]></description>
      <category>Firefly-RK3399</category>
      <author>3spec</author>
      <pubDate>Tue, 20 Mar 2018 23:32:27 +0000</pubDate>
    </item>
    <item>
      <title>RK3399 AIO Displayport missing?</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2239</link>
      <description><![CDATA[Dear firefly team,

where is the advertised DP 1.2 (DisplayPort) connector on RK3399AIO?


Thanks!
BR
fl0wtec]]></description>
      <category>Firefly-RK3399</category>
      <author>fl0wtec</author>
      <pubDate>Tue, 20 Mar 2018 19:53:36 +0000</pubDate>
    </item>
    <item>
      <title>Android Dual Cameras Auto White Balance Issue</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2224</link>
      <description><![CDATA[Hi,

When I connect two cameras (either 2 MIPI-CSI or 1 MIPI-CSI and 1 with DVP) and try to view them simulataneously, the auto white balance of both cameras becomes very poor. It takes a long time to settle, flashing between different balances bef ...]]></description>
      <category>Firefly-RK3399</category>
      <author>3spec</author>
      <pubDate>Fri, 02 Mar 2018 00:58:45 +0000</pubDate>
    </item>
    <item>
      <title>Problem on Gitlab?</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2222</link>
      <description><![CDATA[Hi.
I can\'t pull the latest change from https://gitlab.com/TeeFirefly/FireNow-Nougat.git It looks like the commit made three weeks ago \&quot;1.fix the launcher black when booting 2.fix ADB connections 3.[ AIO-3399JĄ­ \&quot; by \&quot;omy\&quot; touched about 35.000 files]]></description>
      <category>Firefly-RK3399</category>
      <author>mansson</author>
      <pubDate>Mon, 26 Feb 2018 13:41:28 +0000</pubDate>
    </item>
    <item>
      <title>USB audio device must be removed and replugged before working rk3399</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2210</link>
      <description><![CDATA[Hi,

I\'m using a USB speaker + mic (Jabra Speak 410) with the firefly rk3399. When I initially boot the firefly, the usb speaker does not work, either as input or output. After removing the device, and reinserting it (sometimes multiple times), it  ...]]></description>
      <category>Firefly-RK3399</category>
      <author>3spec</author>
      <pubDate>Wed, 14 Feb 2018 02:50:46 +0000</pubDate>
    </item>
    <item>
      <title>UART drivers for rk3399</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2206</link>
      <description><![CDATA[Does nougat source code provide UART drivers?
Because I have tried to search in nougat source code(See link: https://gitlab.com/TeeFirefly/FireNow-Nougat/tree/firefly-rk3399) but I did not find anything related UART.
And how we can fetch data from  ...]]></description>
      <category>Firefly-RK3399</category>
      <author>KrunalShah</author>
      <pubDate>Fri, 09 Feb 2018 13:27:15 +0000</pubDate>
    </item>
    <item>
      <title>RK3399 CoreBoard REV1.0 Schematics</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2195</link>
      <description><![CDATA[Does anybody know if the RK3399 Coreboard  REV1.0 Schematics are available ?]]></description>
      <category>Firefly-RK3399</category>
      <author>big_whit</author>
      <pubDate>Sun, 04 Feb 2018 20:13:49 +0000</pubDate>
    </item>
    <item>
      <title>RK3399 battery charging and sensing</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2191</link>
      <description><![CDATA[Hello,

I am planning to use a Lithium Ion/Polymer battery pack to power the RK3399 when running Android 7. The idea is to have the Android OS display the remaining battery percentage on its status bar.  Is there a recommended battery charging and  ...]]></description>
      <category>Firefly-RK3399</category>
      <author>dariuskrail</author>
      <pubDate>Wed, 31 Jan 2018 14:04:21 +0000</pubDate>
    </item>
    <item>
      <title>Android 8.0 - Where is it?</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2190</link>
      <description><![CDATA[When can we expect support for Android 8.0 Oreo on Firefly-RK3399?
Or will you go straight to 8.1?

When can we expect support for Linux 4.14? 

I am particularly interested in use of HWC2 and drm_hwcomposer as it is the first key ingredience fo ...]]></description>
      <category>Firefly-RK3399</category>
      <author>mansson</author>
      <pubDate>Wed, 31 Jan 2018 10:06:53 +0000</pubDate>
    </item>
    <item>
      <title>3V SPI/I2C voltage translation</title>
      <link>https://bbs.t-firefly.com/forum.php?mod=viewthread&amp;tid=2189</link>
      <description><![CDATA[I want to connect my MCU that run on 3.3V with your board via SPI and I2C, but FireFly voltage level on these buses is 3V. Will I need voltage translation or will it be on spec with FireFly ?]]></description>
      <category>Firefly-RK3399</category>
      <author>Konrad.Z</author>
      <pubDate>Wed, 31 Jan 2018 07:59:12 +0000</pubDate>
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