Linux only distributions

Good day. It happened so that I burned an image without Android and it appears, that pure linux distribs do not support Upgrade Mode. It seems that I am not the first one to run into such a situation but I did not find any recognized clear solution for this problem so far. It seems that this board is more android oriented that linux ubuntu-like. Are there linux(ubuntu)-only projects for vim2 developed currently (git, etc.)?

FYI:

or:

Thanks for your reply. As far as I understand it also requires Android installed on eMMC?

Not for the eMMC versions.
Here is how to do this with an SD-card…
https://docs.khadas.com/vim2/BootFromExtMedia.html

Thank you. I didn’t know about the new ones. I’ll check out the Bionic. Greetings.