deepin 15.11平滑升级到deepin V20

1、切换更新源：替换etc/apt/sources.list 文本为以下内容
记得用管理员权限打开，替换后保存

deb [by-hash=force] http://community-packages.deepin.com/deepin/ apricot main contrib non-free
#deb-src http://community-packages.deepin.com/deepin/ apricot main contrib non-free

2、终端执行

sudo apt-get update &&sudo apt-get dist-upgrade -y

后面安装时凡是要选择的，请选择是或者yes