Deepin 15.11 升级到 Deepin V20 方法
切换更新源
更新 /etc/apt/sources.list 为Deepin V20的源：
## Generated by deepin-installer
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
升级
sudo apt-get clean && sudo apt-get upgrade -y && sudo apt-get dist-upgrade -y