树莓派4B-64位切换源

sudo cp /etc/apt/sources.list  /etc/apt/sources.list.bak           
sudo cp /etc/apt/sources.list.d/raspi.list  /etc/apt/sources.list.d/raspi.list.bak

sudo nano /etc/apt/sources.list 

deb https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye main non-free contrib
deb https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb-src https://mirrors.aliyun.com/debian-security/ bullseye-security main
deb https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib
deb https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib
deb-src https://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib

sudo nano /etc/apt/sources.list.d/raspi.list

deb http://mirrors.aliyun.com/raspberrypi/ buster main ui

apt update & apt upgrade