Cydia Substrate addons are tweaks you installed via Cydia. You can enable or disable them with a single tap, while still having them installed.

This tool lets you troubleshoot faulty/incompatible tweaks without having to go through the Cydia install/uninstall process.

You can effectively use it to temporarily disable subsets of tweaks until you pinpoint which one is the source of whatever issue you're experiencing.

It is not a substitute for actual Cydia uninstallation, and you should not use it to disable arbitrary tweaks for prolonged periods of time. Doing so is likely going to cause trouble, especially if you disable tweaks that are marked as dependencies of other tweaks.

Addons may depend on one another in order to work correctly. As a result, disabling addons that are dependencies of other addons can often lead to respring loops, fixable only by booting your device in "no Substrate" mode (which can be achieved by holding "volume up" while the device boots).

The Cydia Substrate addons tool automatically resolves and manages dependencies between addons by default while you toggle their switches, meaning you don't have to worry about dependency issues. This behavior can be disabled by toggling off the "automatically manage dependencies" switch, which gives you more precise control over what can be disabled.

Addons with orange switches are dependencies of other addons, meaning it's not a good idea to disable them without disabling all their dependants beforehand. This is again done automatically if the "automatically manage dependencies" switch is enabled. Either way, you can tap on each addon in order to see a list of all its dependencies (addons it depends on) and dependants (addons that depend on it).

Addons with red switches should almost never be disabled, as they are either required by your jailbroken device, or provide significant safety features.

  • As of version 7.5.0, re-enabling Cydia Substrate addons before uninstalling them via Cydia is not necessary anymore, as iCleaner Pro keeps the dpkg file list synchronized with the current state of the addons on your device.

  • Disabled Cydia Substrate addons are not restored by uninstalling iCleaner. You have to manually enable them before uninstalling it.