ophub/amlogic-s9xxx-armbian ? reverse-engineered prompt

Build me a project that can generate Armbian images for Amlogic, Rockchip, and Allwinner TV boxes and SBCs, so people can turn unsupported Android boxes into small Linux servers.

I want it to let me pick a device, build or download the right image, flash it to SD card, USB, or eMMC, and keep kernel updates easy. It should include clear setup and usage instructions, and make it simple for someone to rebuild the image later with small changes. If it makes sense, add a few helpful commands for managing the system after boot, like updating the kernel or writing to internal storage.

Please keep it focused on the common chips this kind of project supports, especially s905, s905x2, s905x3, s912, s922x, a311d, rk3588, rk3568, rk3399, and similar. Look up current docs online if you need to, and make the result easy to fork and customize.