Its important for any jailbreak user to keep it up to date. First of all, you should check which version you are using. Auto Update: Go to springboard and tap on Cydia app icon. If your existing version is outdated, a pop up will come up with upgrade notification. Simply open Cydia and tap on Settings, then General and now tap on About. However, you can run “Upgrade Essential” to check latest fixes. We will keep you posted as soon as we get more information so stay tuned here at i Phone Hacks.
Cydia is most important thing for jailbreak i OS user.
It allows to install many value added free apps on jailbroken i Phone, i Pad, i Pad mini and i Pod Touch.
While the process is a bit different, Cydia, the jailbreak app store, makes it pretty simple.
Much like the App Store, Cydia will let you know when you've got updates available for any apps installed on your i Phone, i Pod touch, or i Pad.
One issue there in particular–which I am surprised that no one has pointed at as a problem yet–is that choosing to not bypass the sandbox means we are stuck in a world of increasingly narrowed Unix functionality.