• Explaining computers shows a demo about armbian focal installed on a SD card, but needed additional boot loader software to start it from there.
• Igor in the armbian forum said about one year ago, all Radxa zero images has been tested and they works, if we foll the instructions:

https://forum.armbian.com/topic/21047-radxa-zero-what-images-ive-tried-so-far-and-what-has-and-hasnt-worked/

• but one user reported there that he failed to install all images, and has chosen radxa-zero-ubuntu-focal-server-arm64-20220501-0334-mbr instread which worked fine.
• Artur_Nadolski in the Radxa forum failed to install armbian on the Radxa zero as well:

https://forum.radxa.com/t/cant-boot-ambian-from-emmc/15656