serkho

You need a proper DTB. Correct me if I'm wrong but your device is similar to MXIII+, you might want to check this message I got Armbian_5.77_Aml-s812_Debian_stretch_default_3.10.108_desktop_20190326.img.xz

To try a DTB in Armbian_20.09_Aml-s812.... you need to change the corresponding entry in uEnv.txt. If you are stuck I suggest you try a different distro like OpenELEC (https://github.com/codesnake/OpenELEC.tv/issues/52, https://github.com/codesnake/OpenELEC.tv/releases) just as a proof of concept that your device supports custom Linux

The SD card should be inserted. I meant the Update&Backup app. I'm running a headless server on my box so cannot make any screenshots but you can follow this instruction (don't download any extra images, use Armbian card with it) or this one Also there is a message from balbes150 that most problems are caused by faulty media.

@obaldon You don't need to keep reset down: press it, insert power cord, press power, release reset. Not sure about MX2, but MXIII has an Update&Backup app. To enable multiboot, run firwmare update from the app and select aml_autoscript.zip

Recently I've found a Tronsmart MXIII Plus (Netxeon M82G V2.0 S812/AP6330/2G/8G) in the attic and challenged myself with installing a proper linux onto it. Armbian_20.09_Aml-s812_buster_current_5.9.0-rc7 worked fine except Wi-Fi and Bluetooth. After some 10 days of tinkering I've discovered the forum contains enough information to solve the issue but it is scattered across different topics. Here is how I got wireless stuff working on PCB M82G_V1.0_20150324 Netxeon. 1. Get proper DTB. Either grab it here or build from source by placing the patch into userpatches/kernel/aml-s812-current: 2. Make sure brcmfmac driver loads proper firmware mkdir /usr/lib/firmware/brcm/bak mv /usr/lib/firmware/brcm/brcmfmac4330-sdio.* /usr/lib/firmware/brcm/bak/ ln -s /usr/lib/firmware/brcm/brcmfmac-ap6330-sdio.txt /usr/lib/firmware/brcm/brcmfmac4330-sdio.txt ln -s /usr/lib/firmware/brcm/brcmfmac-ap6330-sdio.bin /usr/lib/firmware/brcm/brcmfmac4330-sdio.bin Useful links: DTB for S812 Minix X8-H Plus by @ntux. The binary did not work on MXIII+ (probably because of compatible = "minix,x8-h-plus", "amlogic,meson8m2") but DTS is fine. CSC support for discontinued rk3288 tv box? (the topic lists various ways to make brcmfmac load proper firmware) Armbian Build for Nexbox A95X with AP6330 (making AP6330 working for another board)