Got Armbian to run on those $20 TV Boxes sold at Wal-Mart. This is for the Dopinder variant, i have not tested on the newest version (YOC) but I will likely pick one up just to see.
-removed-
Requires a few changes outside of the norm for armbian builds, so it's on my own fork. Likely will not be doing a PR. That said, it pulls the latest armbian source when building.
https://github.com/sicXnull/Onn4K-TV-Box-Armbian
Needed:
OTG Cable (required)
USB Hub (recommended)
USB to Ethernet adapter (recommended)
Working
HDMI
Audio
Bluetooth
Wi-Fi
Building:
git clone https://github.com/sicXnull/Onn4K-TV-Box-Armbian.git
cd Onn4K-TV-Box-Armbian
git clone --depth=1 https://github.com/armbian/build armbian-build
cp -R armbian-patch/* armbian-build/
cd armbian-build
./compile.sh build BOARD=onn4k BRANCH=current BUILD_DESKTOP=yes BUILD_MINIMAL=no DESKTOP_APPGROUPS_SELECTED= DESKTOP_ENVIRONMENT=mate DESKTOP_ENVIRONMENT_CONFIG_NAME=config_base EXPERT=yes KERNEL_CONFIGURE=no KERNEL_GIT=shallow RELEASE=bookworm
cd ..
sudo ./postscript.sh
write the image to USB.
cd armbian-build/output/images
sudo dd if=Armbian-unofficial_24.11.0-trunk_Onn4k_bookworm_current_6.6.48_mate_desktop.img of=/dev/sdb bs=4M status=progress
Booting from USB
Plug it into your onn 4K UHD using an OTG cable, and hold the reset button while plugging in power.
For future boots, you just need the USB drive plugged in during poweron. There is no more need to hold the reset button.
EMMC Boot
I'm assuming flashing to EMMC will break it, i have not tested this yet, although i plan to in the future.