Sources are here https://github.com/armbian/build Take a look.
To be sure to be ignored? Your second identical post was deleted as its obviously against the rules. This is community forum, not a satisfaction machinery or customer support mixed with forums (Radxa, Odroid, ...). You are not our customer, Armbian community or maintainers owes you nothing. Here we help each other. How you can help? Be different. Look around if you can help someone ... or act shocked on my patronising. Welcome! 🙃