If you are one of those Jailbreakers who have been waiting for Mobile Substrate to fix all iOS 7 Cydia tweaks that were previously crashing and not working on your 64-bit A7 devices. Saurik has rolled out an updated Mobile Substrate version 0.9.5000 to support Cydia compatibility with all jailbroken A7 devices…
Fix Cydia Compatibility Issues with A7 Devices
In other words, the new Mobile Substrate completely supports all iOS 7 jailbreak tweaks and apps with 64-bit A7 chip powered devices including iPhone 5s, iPad Air or Retina iPad Mini.
Most of the jailbreak tweaks and apps should now be fully functional, thanks to the Cydia compatibility fix released for A7 devices with this update. As Saurik suggests in his latest report, Cydia developers can now make their apps and tweaks compatible with iPhone 5s, iPad Air or Retina iPad mini by just recompiling their tweaks for ARM64.
Despite installing the latest Mobile Substrate 0.9.5000 (also renamed as Cydia Substrate), the iOS 7 jailbreak tweaks will not work until developers release an update for their tweaks with 64-bit compatibility. iPhone 5s and other A7 device owners will have to wait for these developer updates in order to take advantage of the updated Mobile Substrate. [Via]