更换Raspbian Buster源

sudo nano /etc/apt/sources.list

deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi
deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi

sudo apt-get update


https://www.jianshu.com/p/cf35fb2afabc