sudo nano /etc/apt/sources.list
#將原有內容用#注釋掉
deb http://mirrors.aliyun.com/raspbian/raspbian/ buster main contrib non-free rpi
deb-src http://mirrors.aliyun.com/raspbian/raspbian/ buster main contrib non-free rpi
sudo nano /etc/apt/sources.list.d/raspi.list
#將原有內容用#注釋掉
deb http://mirrors.aliyun.com/raspbian/raspbian/ buster main
deb-src http://mirrors.aliyun.com/raspbian/raspbian/ buster main
sudo apt-get update
sudo apt-get upgrade