iOS jailbreaking is the process of removing limitations on iOS, Apple's operating system on devices running it through the use of software and hardware exploits; such devices include the IPhone, IPod touch, IPad, and second-generation Apple TV. Jailbreaking permits root access to the iOS file system and manager, allowing the download of additional applications, extensions, and themes that are unavailable through the official Apple App Store.
Jailbreaking is a form of privilege escalation,and the term has been used to describe privilege escalation on devices by other manufacturers as well. The name refers to breaking the device out of its "jail", which is a technical term used in Unix-style systems, for example in the term "FreeBSD jail". A jailbroken IPhone, IPod touch, or IPad running iOS can still use the App Store, iTunes, and other normal functions, such as making telephone calls.
Restoring a device with iTunes removes the jailbreak.
Jailbreaking is different to IPhone unlocking. IPhones (like all mobile phones) that are sold as part of a contract are often locked to a particular network. This means that if you buy an IPhone from AT&T, for example, you have to use an AT&T SIM card in it. The IPhone is ‘locked’ to that network. Unlocking the IPhone turns it from an IPhone that can only work on the AT&T network to one that can work on any network. But you will still be running officially sanctioned iOS software, and still have the software limitations. Unlocking is considered a breach of your mobile phone contract.
Jailbreak Security While the upside of jailbreaking is more control over what is installed on a device, and that it sometimes allows users to do things Apple doesn't approve of (such as, creating ringtones before the feature was available in iTunes), it can also cause problems, including data corruption and allowing hackers and criminals to install malicious code on jailbroken devices.
Apple does not support devices that have been damaged due to jailbreaking and may consider them out of warranty.
1. Some of the things you can do with jailbroken devices include:
2. Change the interface of your iOS device
3. Remove built-in apps that come with the iOS
4. Install apps not authorized by Apple or available through the App Store
5. Get and install paid apps for free (however, this is theft and illegal)
6. Download music, videos, ebooks, and other content for free (in some cases, this is theft)
7. Get tethering without additional fees
8. Access the iOS filesystem
Yes, you can use iTunes and the App Store after jailbreaking your device. As a matter of fact, nothing will really change. The only notable change to your iOS device will be that, after jailbreaking, you will have a new application installed on your device called Cydia.
Cydia is like appstore ,you can browse Cydia for apps, tweaks, mods.
You can download and install Cydia apps just like the way you download app from apple app store.
Most of the apps/tweaks in Cydia are free, but it is not unsual for a jailbreak app to sell for a few dollars.
Different Types of Jailbreaks:
Tethered Jailbreak: Tethered jailbreaks require you to plug your iDevice into the computer to start it up because the device needs some code from a program on the computer that will let it boot up. The reason it needs this code is because the device checks for unsigned software running and it will not let it boot up without the code from the computer.
Untethered Jailbreak: An untethered jailbreak doesn't require you to plug you iDevice into the computer to boot because the jailbreak patches the file that checks for unsigned software.
Semi-Tethered: A semi-tethered jailbreak allows you to start your iDevice without plugging it into your computer however you will not be able to use your jailbroken addons until you boot from your computer using a program such as redsn0w.
Update: This tutorial was written for iOS 8.1.1, but you can follow the same directions to jailbreak iOS 8.1.2. Simply make sure you use the latest version of TaiG.
Note that TaiG can be used to jailbreak iPhone, iPad, and iPod touch running iOS 8, iOS 8.0.2, iOS 8.1, and iOS 8.1.
In this guide, we use TaiG to jailbreak an iPhone, but the process is the same regardless of the device.
How to jailbreak iOS 8.1.1 using TaiG on Windows
Step 1: Download TaiG
Step 2: Ensure that iTunes is installed and plug your device into your computer and make sure that iTunes recognizes it
Step 3: Restore your iPhone to iOS 8.1.1 (this tool can also jailbreak iOS 8.0, iOS 8.0.2, iOS 8.1)
Step 4: Make sure that Find My iPhone is turned off in Settings → iCloud
Step 5: Make sure that your passcode is disabled in Settings → Touch ID & Passcode
Step 6: Enable AirPlane mode via Control Center
Step 7: Right click on the TaiGJBreak_1006.exe tool and select Run as Administrator, followed by Yes
Step 8: Make sure the TaiG tool recognizes your iOS device, uncheck the second box but keep Cydia checked, and then click the green jailbreak button
Step 9: Let the jailbreak progress until the tool states that the jailbreak is complete (you’ll see a smiley face)
Step 10: Once your iPhone reboots, you should see the Cydia app on your Home screen
Congratulations! You just jailbroke iOS 8.1.1