Saurik has just released the updated Cydia Substrate 0.9.5100 to add new features requested by developers. In particular they wanted to add the iOS 8 requirement, find more private symbols, move more arm64 instructions, and hang the ARMv7 functions.
Cydia Substrate is the new version of “MobileSubstrate” that tweaks to the customization work aims. Without this extension, it is impossible to take advantage of customization such as Springtomize 3 Activator, and thousands of others.
To take advantage of all this, it is necessary to have jailbroken your device first and the last jailbreak is dated to Pangu8 – developed by the PanguTeam, Windows and Mac compatible tool. See our tutorials on the following links:
Cydia Substrate deb available in Cydia found in Telesphoreo Repo
Tutorials to jailbreak and install Cydia: