編輯/etc/apt/sources.list文件,將地址變更爲http://mirrors.ustc.edu.cn/raspbian/raspbian/
deb http://mirrors.ustc.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi
deb-src http://mirrors.ustc.edu.cn/raspbian/raspbian/ buster main contrib non-free rpi
編輯/etc/apt/sources.list.d/raspi.list,將地址變更爲http://mirrors.ustc.edu.cn/archive.raspberrypi.org/debian/
deb http://mirrors.ustc.edu.cn/archive.raspberrypi.org/debian/ buster main
deb-src http://mirrors.ustc.edu.cn/archive.raspberrypi.org/debian/ buster main