We said that @Dusun_IoT as a company should port the full Home Assistant Operation System to it.
We did not say that we have instructions on how you can do a DIY installation.
Anyway, it is not a standard mini-PC but instead a custom embedded system, so not easy to DIY it.
Again, suggest that @Dusun_IoT as a company could follow darkxst’s and ITead/Sonoff’s development approach for Sonoff iHost for the better option of porting Home Assistant Operating System in a standardized way to this hardware within the spirit of open-source software: