armbian failed fastmirror.pp.ua:80
Do first:
curl -s http://apt.armbian.com/mirrors | jq .
Do second:
vi /etc/apt/sources.list.d/armbian.list
change
https://apt.armbian.com
to
any another mirror from step 1
Edit /etc/apt/sources.list.d/armbian.sources and replace the URL https://apt.armbian.com with your preferred mirror.
Step 3:
rm -rf /var/lib/apt/lists/*
apt update --fix-missing && apt upgrade
use it!
apt autoclean && apt autoremove # after