i do bookmark those that did work for me.
here is the link in case android wont start in waydroid:
two posts below is maybe a simplifacation by rinnigus
i had to flash my gs290 in september due to hw crash
i did repeat it several times due to non-working waydroid
the recap:
it did actually always work, and the only issue for me was the wrong image to use in waydroid --init