话不多说。
1. 卸载 Deepin Store

    $ sudo apt-get purge deepin-software-center deepin-software-center-data

2. 修改源文件

    $ sudo vim /etc/apt/sources.list
    deb http://packages.deepin.com/deepin unstable main contrib non-free
    deb-src http://packages.deepin.com/deepin unstable main contrib non-free


3. 导入新源的 apt-key

    $ sudo apt-key add keys.file

4. 开始升级

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

5. 升级成功！