打开你常用的包管理器，在软件源（Sources）界面点击右上角的“编辑”（Edit）或“添加”按钮。
A notable compatibility issue arose when Cydia 1.1.20 was released — CyDown version 5.78 was forcefully uninstalled because it only supported up to version 1.1.19. Users on newer Cydia versions had to either downgrade to CyDown 5.76 or wait for an update. cydown repo