手动执行：复制如下代码到树莓派终端执行
cat << EOF > /etc/apt/sources.list deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main non-free contrib rpi deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main non-free contrib rpi EOF cat << EOF > /etc/apt/sources.list.d/raspi.list deb http://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main ui EOF
cat << EOF > /etc/apt/sources.list deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ bullseye main contrib non-free deb http://mirrors.huaweicloud.com/debian-security bullseye-security main contrib n> deb http://mirrors.huaweicloud.com/debian bullseye-updates main contrib non-free EOF cat << EOF > /etc/apt/sources.list.d/raspi.list deb http://mirrors.nju.edu.cn/raspbian/raspbian/ bullseye main EOF
秘钥设置
sudo gpg --keyserver keyserver.ubuntu.com --recv 9165938D90FDDD2E sudo gpg --export --armor 9165938D90FDDD2E | sudo apt-key add -
cat << EOF > /etc/apt/sources.list deb https://mirrors.ustc.edu.cn/debian/ bullseye main contrib non-free deb http://mirrors.ustc.edu.cn/debian-security/ bullseye-security main contrib n> deb https://mirrors.ustc.edu.cn/debian/ bullseye-updates main contrib non-free EOF cat << EOF > /etc/apt/sources.list.d/raspi.list deb http://archive.raspberrypi.org/debian/ bullseye main EOF cat << EOF > /etc/apt/sources.list.d/raspi.list deb http://mirrors.ustc.edu.cn/raspbian/raspbian/ bullseye main EOF
至此，树莓派软件源就替换好了，是不是很简单。
最后，你可以试下执行 sudo apt-get update，会发现更新速度快了很多。
sudo apt-get update ; sudo apt-get upgrade ; sudo apt-get dist-upgrade ; sudo rpi-update
