Good news this morning for jailbreakers. Following the release of the new Mobile Substrate for iOS 7, Saurik has updated Substrate Safe Mode to be more friendly with the newer firmware and newer A7 devices like the iPhone 5s and iPad Air.
For those unfamiliar with it, Safe Mode is what prevents your device from entering a permanent crash cycle by giving you a chance to uninstall problematic packages. And until now, it wasn't behaving nicely with the Mobile Substrate update...