blyad ebuchaya ubunta, stavish 18.04 s fleshki (len kachat novuyu) i sosesh s `Updating from such a repository can't be done securely, and is therefore disabled by default` i nihuya iz `https://askubuntu.com/questions/732985/force-update-from-unsigned-repository` ne rabotaet blyad, ebanoe vsyo suka dermo zhopa her