About Jailbreak
iOS Jailbreaking is the removing of software restrictions imposed by iOS, Apple’s mobile operating system, on devices running it through the use of software exploits. These devices are the iPhone, ipod, iPod touch, iPad, and the Apple TV2 and 4. Jailbreaking permits root access to the iOS file system, allowing the downloading and installation of additional applications, extensions, and themes that are unavailable through the official Apple App Store.
Q: What should I do before jailbreak?
A: Turn off Find My iPhone. Run Settings app -> find and click iCloud -> click Find My iPhone.
Q: What should I do when iPhone keeps saying Storage almost full?
A: This reminder won’t affect the normal use of your iPhone, this problem happens when the jailbreak program is written to the system directory.
About Cydia
Cydia is a software installer that helps you exercise the freedom of your jailbroken device — letting you install any kind of software you want, and helping you make your device even more useful and fun by customizing it to look and work the way you like it.
Q: What’s the relation between jailbreak and cydia?
As long as you jailbreak your iPhone, and then you can install cydia. A cydia icon should be appeared on your iPhone’s screen after you successfully jailbroke your iPhone.
Q: What’s cydia source?
A: Cydia source refers to excellent tweaks and apps that you won't find on the App Store.
Q: How to add /revise cydia source after jailbreak?
You may take this tutorial as reference: How to add cydia sources after jailbreak?
About Jailbreak Tweak
Q: What jailbreak plugin I must install after jailbreak?
A: You must install Appsync after jailbreak, if you want to install some other third party apps.
Q: Can I remove and disable com.apple.mobile.softwareupdated.plist service?
You’d better do not remove or disable this service after jailbreak, it may cause white apple problem.