The first batch Tronsmart Orion R28 Pro/Meta Android TV boxes where ships with a micro SD card loaded with Android 4.4 SDK, so I tried it myself, and posted instructions to build an RK3288 Android image, but when I flashed the image to my device, I quickly realized it was an older firmware (106k4), so the SDK would not be so useful, since all the recent bug fixes were not included. Luckily, more recent Android 4.4 SDK were released or leaked, and naobsd decided to port it to Hotack T031 and Beelink/Netxeon R89 boards that are found in many RK3288 Android TV boxes.
Since he does not own any devices based on Netxeon R89, he asked me to try, and I did so on Tronsmart Orion R28 Meta. Bear in mind these are images built from a patched SDK, so not everything may work, there’s no Google Play Store, and it’s mostly targeted to developers wanting to build their own firmware.
To give it a try first download the image, and flash it as per the flashing instructions.
<path_to_tools_in_rockship_sdk>/update_tool uf update.img
Afer installation is complete, and Android boot, you can select the stock launcher or ITV launcher has shown above. Both Ethernet and Wi-Fi worked, but
the key mapping is not for the remote control included with Orion R28, so the up arrow key is mapped to the power key, and so on. It should not be too complicated to fix. the code has been updated, and remote control is now working fine.
So if you can to build it yourself (I have not tried), but getting the code from three sources: