armbian mirrors
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-updates main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ buster-backports main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian-security buster/updates main contrib non-free
# deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security buster/updates main contrib non-free
deb http://apt.armbian.com buster main buster-utils buster-desktop
deb https://mirrors.tuna.tsinghua.edu.cn/armbian bionic main bionic-utils bionic-desktop
deb https://mirrors.tuna.tsinghua.edu.cn/armbian buster main buster-utils buster-desktop
deb https://mirrors.tuna.tsinghua.edu.cn/armbian buster main buster-utils