iOS jailbreaking is the process of removing the limitations on Apple devices running the iOS operating system 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 operating system, 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.
Reasons for jailbreaking 
Use of third party apps 
One of the reasons for jailbreaking is to expand the feature set limited by Apple and its App Store.[dubious ] Apple checks apps for compliance with its iOS Developer Program License Agreement before accepting them for distribution in the App Store. Jailbreaking permits the downloading of programs not approved by Apple.
Since software programs available through Cydia are not required to adhere to App Store guidelines, many of them are not typical self-contained apps but instead are extensions and customizations for iOS and other apps. Users install these programs for purposes including personalization and customization of the interface, adding desired features and fixing annoyances, and making development work on the device easier by providing access to the filesystem and command-line tools. Many Chinese iPhone owners jailbreak their phones to install third-party Chinese character input systems because they are easier to use than Apple's.
Use of handset on multiple carriers 
Jailbreaking also opens the possibility for using software to unofficially unlock carrier-locked iPhones so they can be used with other carriers. Software-based unlocks have been available since 2008, with each tool applying to a specific iPhone model and baseband version (or multiple models and versions).
Early exploit fixes 
On July 15, 2011, Apple released a new version of iOS that closed the exploit used in JailbreakMe 3.0. The German Federal Office for Information Security had reported that the "critical weakness" uncovered by JailbreakMe meant that iOS users could potentially have their information stolen or unwillingly downloaded malware by clicking on maliciously crafted PDF files. Before Apple released a fix for this security hole, jailbreak users had access to a fix published by the developer of JailbreakMe.
Security, privacy, and stability 
The first iPhone worm, iKee, appeared in early November 2009, created by 21-year-old Australian student within the town of Wollongong. He told Australian media that he created the worm to raise awareness of security issues: jailbreaking allows users to install an SSH service, which those users can leave in the default unsecure state. In the same month, F-Secure reported on a new malicious worm compromising bank transactions from jailbroken phones in the Netherlands, similarly affecting devices where the owner had installed SSH without changing the default password.
A Forbes staff analyzed UCSB study on 1407 free programs available from a third party source and Apple. Of the 1,407 free apps investigated in the cited study, 825 were downloaded from Apple’s App Store using the website App Tracker, and 526 from BigBoss(Cydia's default repository). 21% of official apps tested leaked device ID and 4% leaked location. Unofficial apps leaked 4% and 0.2% respectively. 0.2% of apps from Cydia leaked photos and browsing history, while the Apple store leaked none. He commented that unauthorized apps tend to respect privacy better than official ones. Also, there is a program called PrivaCy which allows user to control the upload of usage statistics to remote servers.
Installing software published outside the App Store has the potential to affect battery life and system stability if the software is poorly optimized or frequently uses resource-draining services (such as 3G or Wi-Fi).
"Jailbreaking" vs. "Android rooting" 
Jailbreaking devices running the Apple iOS operating system is sometimes compared to gaining root access on Android devices. However, these are distinct concepts. In the tightly-controlled iOS world, technical restrictions prevent (1) installing or booting into a modified or entirely new operating system (a "locked bootloader" prevents this), (2) sideloading unsigned applications onto the device is also prevented, and (3) user-installed apps are restricted from having root privileges. Bypassing all these restrictions together constitute the expansive term "jailbreaking" of Apple devices. That is, jailbreaking entails overcoming several types of iOS security features simultaneously.
By contrast, Android devices may or may not have locked bootloaders, with many vendors such as HTC and Google explicitly providing the user the ability to unlock devices and even replace the operating system entirely. Similarly, the ability to sideload apps is typically permissible on Android devices without root permissions. Thus, it is primarily the third aspect of iOS jailbreaking relating to superuser privileges that correlates to Android rooting.
Legal status 
||The examples and perspective in this section may not represent a worldwide view of the subject. (July 2012)|
Jailbreaking a device involves circumventing its technological protection measures (in order to allow root access and running alternative software), so its legal status is affected by laws regarding circumvention of digital locks, such as laws protecting digital rights management (DRM) mechanisms. Many countries do not have such laws, and some countries have laws including exceptions for jailbreaking.
International treaties have influenced the development of laws affecting jailbreaking. The 1996 World Intellectual Property Organization (WIPO) Copyright Treaty requires nations party to the treaties to enact laws against DRM circumvention. The American implementation is the Digital Millennium Copyright Act (DMCA), which includes a process for establishing exemptions for non-copyright-infringing purposes such as jailbreaking. The 2001 European Copyright Directive implemented the treaty in Europe, requiring member states of the European Union to implement legal protections for technological protection measures. The Copyright Directive includes exceptions to allow breaking those measures for non-copyright-infringing purposes, such as jailbreaking to run alternative software, but member states vary on the implementation of the directive.
In November 2012, Canada amended its Copyright Act with new provisions prohibiting tampering with digital locks, with exceptions including software interoperability. Jailbreaking a device to run alternative software is a form of circumventing digital locks for the purpose of software interoperability.
There had been several efforts from 2008-2011 to amend the Copyright Act (Bill C-60, Bill C-61, and Bill C-32) to prohibit tampering with digital locks, along with initial proposals for C-11 that were more restrictive, but those bills were set aside. In 2011, Michael Geist, a Canadian copyright scholar, cited iPhone jailbreaking as a non-copyright-related activity that overly-broad Copyright Act amendments could prohibit.
India's copyright law permits circumventing DRM for non-copyright-infringing purposes. Parliament introduced a bill including this DRM provision in 2010 and passed it in 2012 as Copyright (Amendment) Bill 2012. India is not a signatory to the WIPO Copyright Treaty that requires laws against DRM circumvention, but being listed on the US Special 301 Report "Priority Watch List" applied pressure to develop stricter copyright laws in line with the WIPO treaty.
Jailbreaking might be legal in Singapore if done to provide interoperability and not circumvent copyright, but that has not been tested in court.
United States 
In 2010, in response to a request by the Electronic Frontier Foundation, the U.S. Copyright Office explicitly recognized an exemption to the DMCA to permit jailbreaking in order to allow iPhone owners to use their phones with applications that are not available from Apple's store, and to unlock their iPhones for use with unapproved carriers. Apple had previously filed comments opposing this exemption and indicated that it had considered jailbreaking to be a violation of copyright (and by implication prosecutable under the DMCA). Apple's request to define copyright law to include jailbreaking as a violation was denied as part of the 2009 DMCA rulemaking. In their ruling, the Library of Congress affirmed on July 26, 2010 that jailbreaking is exempt from DMCA rules with respect to circumventing digital locks. DMCA exemptions must be reviewed and renewed every three years or else they expire. In 2012, the Copyright Office renewed the jailbreaking exemption for phones but declined to approve a new exemption for tablet computers such as iPads, due to the vague definition of "tablet" in the proposed exemption. The Copyright Office also renewed the 2010 exemption for unofficially unlocking phones to use them on unapproved carriers, but restricted this exemption to phones purchased before January 2013.
Tim Wu, a professor at Columbia Law School, argued in 2007 that jailbreaking is "legal, ethical, and just plain fun." Wu cited an explicit exemption issued by the Library of Congress in 2006 for personal unlocking, which notes that locks "are used by wireless carriers to limit the ability of subscribers to switch to other carriers, a business decision that has nothing whatsoever to do with the interests protected by copyright" and thus do not implicate the DMCA. Wu did not claim that this exemption applies to those who help others unlock a device or "traffic" in software to do so. In 2010 and 2012, the U.S. Copyright Office approved exemptions to the DMCA that allow iPhone users to jailbreak their devices legally. It is still possible Apple may employ technical countermeasures to prevent jailbreaking or prevent jailbroken phones from functioning, but it will not be able to sue users who jailbreak. It is also unclear whether it is legal to traffic in the tools used to make jailbreaking easy.
New Zealand 
New Zealand's copyright law allows the use of technological protection measure (TPM) circumvention methods as long as the use is for legal, non-copyright-infringing purposes. This law was added to the Copyright Act 1994 as part of the Copyright (New Technologies) Amendment Act 2008.
Types of jailbreaks 
An "untethered" jailbreak has the property that if the user turns the device off and back on, the device will start up completely, and the kernel will be patched without the help of a computer – in other words, it will be jailbroken after each reboot.
However, with a "tethered" jailbreak, a computer is needed to turn the phone on each time it is rebooted. If the device starts back up on its own, it will no longer have a patched kernel, and it may get stuck in a partially started state. By using a computer, the phone is essentially "re-jailbroken" (using the "boot tethered" feature of a jailbreaking tool) each time it is turned on.
A device with a tethered jailbreak may have a semi-tethered solution, which means that when the device boots, it will no longer have a patched kernel (so it will not be able to run modified code), but it will still be usable for normal functions. To use any features that require running modified code, the user must start the device with the help of the jailbreaking tool in order for it to start with a patched kernel (jailbroken).
History of iOS jailbreaking tools 
A few days after the original iPhone became available in July 2007, developers released the first jailbreaking tool for it, and soon a jailbreak-only game app became available. In October 2007, JailbreakMe 1.0 (also called "AppSnapp") allowed people to jailbreak iPhone OS 1.1.1 on both the iPhone and iPod touch, and it included Installer.app as a way to get software for the jailbroken device. In February 2008, Zibri released ZiPhone, a tool for jailbreaking iPhone OS 1.1.3 and 1.1.4.
The iPhone Dev Team has released a series of free desktop-based jailbreaking tools. It released a version of PwnageTool in July 2008 to jailbreak the then new iPhone 3G on iOS 2.0 as well as the iPod touch, newly including Cydia as the primary third-party installer for jailbroken software (PwnageTool continues to be updated for untethered jailbreaks of newer iOS versions). The iPhone Dev Team released QuickPWN to jailbreak iOS 2.2 on iPhone and iPod touch, also including options to enable functionality that was possible but disabled by Apple on certain devices. After Apple released iOS 3.0, the Dev Team published redsn0w as a simple jailbreaking tool usable on Mac and Windows, and also updated PwnageTool (now primarily intended for expert users making custom firmware, and only for Mac). It continues to maintain redsn0w for jailbreaking most versions of iOS 4 and iOS 5 on most devices. As of December 2011, redsn0w includes the "Corona" untether by pod2g for iOS 5.0.1 for iPhone 3GS, iPhone 4, iPad 1, and iPod touch 3rd and 4th generation. As of June 2012, redsn0w also includes the "Rocky Racoon" untether by pod2g for iOS 5.1.1 on all iPhone, iPad, and iPod touch models that support iOS 5.1.1.
George Hotz, who developed the first iPhone unlock, released a jailbreaking tool for the iPhone 3GS on iOS 3.0 called purplera1n, and blackra1n for iOS version 3.1.2 on the 3rd generation iPod touch and other devices. In October 2010, he released limera1n, a low-level boot ROM exploit that permanently works to jailbreak the iPhone 4 and is used as part of tools including redsn0w.
Nicholas Allegra (alias "comex") released a program called JailBreakMe 3 in July 2011 Hackers released a package called Spirit in May 2010. Spirit jailbreak for devices including iPad and then new iPhones running iOS 3.1.2, 3.1.3, and 3.2 In August 2010, comex released JailbreakMe 2.0, a web-based tool that was the first to jailbreak the iPhone 4 (on iOS 4.0.1). In July 2011, he released JailbreakMe 3.0, a web-based tool for jailbreaking all devices on certain versions of iOS 4.3, including the iPad 2 for the first time (on iOS 4.3.3). JailbreakMe 3.0 uses a flaw in PDF file rendering in Mobile Safari.
Chronic Dev Team initially released greenpois0n in October 2010, a desktop-based tool for jailbreaking iOS 4.1 and later iOS 4.2.1 on most devices including the Apple TV, as well as iOS 4.2.6 on CDMA (Verizon) iPhones.
The iPhone Dev Team, Chronic Dev Team, and pod2g collaborated to release Absinthe in January 2012, a desktop-based tool to jailbreak the iPhone 4S for the first time and the iPad 2 for the second time, on iOS 5.0.1 for both devices and also iOS 5.0 for iPhone 4S. In May 2012 it released Absinthe 2.0, which can jailbreak iOS 5.1.1 untethered on all iPhone, iPad, and iPod touch models that support iOS 5.1.1, including jaibreaking the third-generation iPad for the first time. The hackers together called the evad3rs released an iOS 6.X jailbreak tool called evasi0n. The expected release was on Sunday, February 3, 2013, though it was actually released on Monday, February 4, 2013 at noon Eastern Standard Time. The site initially gave anticipating users download errors as there was a high volume of interest in the download for the jailbreak utility, which is available for Linux, OS X, and Windows. Apple has now upgraded its software to iOS 6.1.3, permanently patching out the evasi0n jailbreak. There is currently no jailbreak available for iOS devices on 6.1.3+.
First jailbreaks by device 
|Device/OS||Release date||Date of first jailbreak||Time (days)||Tool||Developer|
|iPhone/iOS 1.0||June 29, 2007||July 10, 2007||11||(no name)||iPhone Dev Team|
|iPod touch||September 5, 2007||October 10, 2007||36||(no name)||niacin and dre|
|iPhone 3G/iOS 2.0||July 11, 2008||July 20, 2008||9||PwnageTool||iPhone Dev Team|
|iPod touch (2nd generation)||September 9, 2008||January 30, 2009||143||redsn0w||iPhone Dev Team and Chronic Dev Team|
|iOS 3.0||March 17, 2009||June 19, 2009||94||PwnageTool||iPhone Dev Team|
|iPhone 3GS||June 19, 2009||July 3, 2009||14||purplera1n||George Hotz|
|iPad||April 30, 2010||May 3, 2010||3||Spirit||comex|
|iOS 4.0||June 21, 2010||June 21–23, 2010||2||PwnageTool||iPhone Dev Team|
|iPhone 4||June 24, 2010||August 1, 2010||38||JailbreakMe 2.0||comex|
|Apple TV (2nd generation)||September 1, 2010||October 20, 2010||49||PwnageTool||iPhone Dev Team|
|iPad 2||March 11, 2011||July 5, 2011||116||JailbreakMe 3.0||comex|
|iOS 5.0||October 12, 2011||October 13, 2011||1||redsn0w||iPhone Dev Team|
|iPhone 4S||October 14, 2011||January 20, 2012||98||Absinthe||pod2g, Chronic Dev Team, iPhone Dev Team|
|Apple TV (3rd generation)||March 7, 2012||(none)|
|iPad (3rd generation)||March 16, 2012||May 25, 2012||70||Absinthe 2.0||pod2g, Chronic Dev Team, iPhone Dev Team|
|iOS 6.0||September 19, 2012||September 19, 2012||0||redsn0w||iPhone Dev Team|
|iPhone 5||September 21, 2012||February 4, 2013||136||evasi0n||evad3rs|
|iPod touch (5th Generation)||October 23, 2012||February 4, 2013||104||evasi0n||evad3rs|
|iPad (4th Generation)||November 2, 2012||February 4, 2013||94||evasi0n||evad3rs|
|iPad Mini||November 2, 2012||February 4, 2013||94||evasi0n||evad3rs|
Recent releases of jailbreaking tools 
|Software Name||Release Date||Hardware||Firmware||Untethered?||Publisher|
|JailbreakMe 3.0||July 5, 2011||||4.2.6–4.2.8
|Seas0npass||October 18, 2011||2nd generation Apple TV||4.3–4.4.4||Yes|
|redsn0w 0.9.15 beta 3||November 1, 2012||||4.1–6.1||Untethered: 4.1–4.3.3, 4.2.6–4.2.8, 5.0.1, 5.1.1
||iPhone Dev Team|
|Absinthe 2.0.4||May 30, 2012||||5.1.1||Yes||pod2g, Chronic Dev Team, iPhone Dev Team|
|evasi0n||February 4, 2013||6.0-6.1.2||Yes||pod2g, MuscleNerd, pimskeks, and planetbeing (evad3rs)|
See also 
- The Verizon CDMA iPhone 4 ran on iOS 4.2.5 to 4.2.10, with incremental updates being bugfixes that were simultaneously applied from 4.3.1 to 4.3.5.
- iOS Hacker's Handbook. Miller, Charlie; Blazakis, Dion; DaiZovi, Dino; Esser, Stefan; Iozzo, Vincenzo; Weinmann, Ralf-Philip. John Wiley & Sons. 2012. pp. 309–310. ISBN 9781118228432. Retrieved January 18, 2013.
- Höbarth, S.; Mayrhofer, R. "A framework for on-device privilege escalation exploit execution on Android". Proc. IWSSI/SPMU 2011: 3rd International Workshop on Security and Privacy in Spontaneous Interaction and Mobile Phone Use, colocated with Pervasive 2011. Retrieved January 18, 2013.
- Robert McMillan (November 5, 2008). "A Jailbreak for Google's Android". PCWorld. Retrieved January 18, 2013.
- David Kravets (April 11, 2011). "Sony Settles PlayStation Hacking Lawsuit". Threat Level. Wired. Retrieved January 18, 2013.
- Mike Keller (February 13, 2012). "Geek 101: What Is Jailbreaking?". Geek Tech. PCWorld. Retrieved February 15, 2012.
- Adrian Kingsley-Hughes (May 28, 2012). "'Should I Jailbreak My iPhone?' And Other Jailbreaking Questions Answered". Tech. Forbes. Retrieved November 14, 2012.
- Sharon Vaknin (June 27, 2012). "How to unjailbreak your iPhone, iPad, or iPod Touch". How To. CNet. Retrieved November 14, 2012.
- Christopher Breen (December 29, 2008). "The Best IPhone Apps Not in the App Store". Macworld. PCWorld. Retrieved November 14, 2012.
- Chris Foresman (December 13, 2010). "iPhone jailbreaker set to bring Cydia to Mac OS X". Infinite Loop. Ars Technica. Retrieved August 2, 2011.
- Ryan Singel (April 15, 2010). "Apple App Store Bans Pulitzer-Winning Satirist for Satire". Wired. Retrieved February 12, 2011.
- Adam Dachis (March 14, 2011). "How to Get the Most Out of Your Jailbroken iOS Device". Lifehacker. Retrieved August 2, 2011.
- Jenna Wortham (May 12, 2009). "Unofficial Software Incurs Apple's Wrath". The New York Times. Retrieved August 2, 2011.
- Zdziarski, Jonathan (2008). iPhone Open Application Development: Write Native Applications Using the Open Source Tool Chain. pp. 3–4.
- Landau, Ted (2009). Take control of your iPhone. p. 107.
- Nathan T. Washburn (May 4, 2012). "Apple Discovers a New Market in China: Rich Boyfriends". HBR Blog Network. Harvard Business Review. Retrieved January 9, 2013.
- Brian X. Chen (August 7, 2009). "6 Reasons to Jailbreak Your iPhone". Gadget Lab. Wired. Retrieved May 1, 2012.
- Ben Wilson (February 8, 2008). "Software-based unlock for iPhone 1.1.3, step-by-step instructions". iPhone Atlas. CNet. Retrieved May 1, 2012.
- Ian Paul (December 22, 2008). "3G iPhone Unlock Expected". Today @ PCWorld. PCWorld. Retrieved May 1, 2012.
- Robertson, Jordan (2011-07-08). "Security holes discovered in iPhones, iPads". News & Record. Associated Press. Retrieved 2011-07-09.
- Brigid Andersen (November 9, 2009). "Australian admits creating first iPhone virus". ABC Online. Retrieved October 26, 2011.
- "New iPhone worm can act like botnet say experts". BBC News. 2009-11-23. Retrieved 2010-04-10.
- Mikko (2009-11-22). "Malicious iPhone Worm". News from the Lab. F-secure. Retrieved 2010-04-10.
- Greenberg, Andy (2012-02-14). "Unauthorized iPhone And iPad Apps Leak Private Data Less Often Than Approved Ones". Tech (Forbes). Retrieved 2012-02-15.
- Ellis Hamburger (May 3, 2011). "The Truth About Jailbreaking Your iPhone: The 5 Biggest Drawbacks". SAI: Tools. Business Insider. Retrieved October 26, 2011.
- Adam Dachis (May 5, 2011). "Four Reasons Not to Jailbreak Your iPhone, iPod touch, or iPad". Lifehacker. Retrieved October 26, 2011.
- Brennon Slattery (August 3, 2010). "5 Reasons to Jailbreak Your iPhone – and 5 Reasons Not". Today @ PCWorld. PCWorld. Retrieved October 26, 2011.
- HTC Bootloader Unlock Instructions
- Google instructions on bootloader unlocking
- Duncan Geere (2010-07-28). "Investigation: Is it legal to jailbreak a UK iPhone?". Wired UK. Retrieved 2012-10-26.
- Michael Geist (7 November 2012). "Canadian Copyright Reform In Force: Expanded User Rights Now the Law". michaelgeist.ca. Retrieved 13 November 2012.
- "Canada’s C-11 Bill and the Hazards of Digital Locks Provisions". Electronic Frontier Foundation. 2012-02-10. Retrieved 2012-10-17.
- The Canadian Press (2011-10-13). "Phone 'jailbreaking' allows users to hack their phone". CTV News. Retrieved 2012-10-17.
- Pranesh Prakash (29 April 2010). "Technological Protection Measures in the Copyright (Amendment) Bill, 2010". Centre for Internet and Society. Retrieved 10 November 2012.
- Nate Anderson (22 April 2010). "India's copyright proposals are un-American (and that's bad)". Ars Technica. Retrieved 10 November 2012.
- Pranesh Prakash (23 May 2012). "Analysis of the Copyright (Amendment) Bill 2012". Centre for Internet and Society. Retrieved 10 November 2012.
- Kenny Chee (12 August 2010). "iPhone jailbreak may be legal here, but... But there will be certain legal provisions.". DigitalOne. AsiaOne. Retrieved 10 November 2012.
- Leander Kahney (July 26, 2010). "Apple’s Official Response To DMCA Jailbreak Exemption: It Voids Your Warranty". Cult Of Mac. Retrieved October 26, 2011.
- "Copyright office provides exemption to DMCA". United States Copyright Office. 2009-02-12. Retrieved 2009-07-17.
- Declan McCullagh (July 26, 2010). "Feds say mobile-phone jailbreaking is OK". Politics and Law. CNET. Retrieved October 26, 2011.
- Timothy B. Lee (2012-10-25). "Jailbreaking now legal under DMCA for smartphones, but not tablets". Ars Technica. Retrieved 2012-10-26.
- Tim Wu (October 4, 2007). "The iPhone Freedom Fighters". Technology. Slate. Retrieved October 26, 2011.
- "Federal Register: Exemption to Prohibition on Circumvention of Copyright Protection Systems for" (PDF). Retrieved 2010-09-11.
- David Goldman (2010-07-26). "Jailbreaking iPhone apps is now legal". CNN Money. Retrieved 2010-09-11.
- "Transcript of "Jailbreak?" (July 30, 2010)". On The Media. 2010-07-30. Retrieved 2010-09-11.
- Michael Geist (2008-04-10). "New Zealand's Digital Copyright Law Demonstrates Anti-Circumvention Flexibility". Michael Geist. Retrieved 2012-10-26.
- Stephen Bell (2011-09-30). "Law changes required before NZ ratifies ACTA". ComputerWorld New Zealand. Retrieved 2012-10-26.
- Joseph Volpe (January 20, 2012). "Absinthe A5 jailbreak released for iPhone 4S, Hacker Dream Team makes untethered dreams come true". Engadget. Retrieved January 20, 2012.
- John Paul Titlow (January 20, 2012). "Now You Can Jailbreak Your iPhone 4S and iPad 2". ReadWriteWeb. Retrieved January 20, 2012.
- Fish, Elizabeth (2011-10-24). "Semi-tethered iOS 5 Jailbreak Developed, Useful On The Move". Geek Tech. PCWorld. Retrieved 2012-04-22.
- Ricker, Thomas (2007-07-10). "iPhone Hackers: "we have owned the filesystem"". Engadget. Retrieved 2009-07-17.
- Topolsky, Joshua (2007-08-06). "First third-party "game" app appears for iPhone". Engadget. Retrieved 2009-07-17.
- Wilson, Ben (2007-10-10). "Official iPhone 1.1.1 jailbreak released with easy-to-follow instructions; does not require TIFF exploit". CNET.com. Retrieved 2009-11-10.
- Gregg Keizer (October 29, 2007). "Hacker Software Can Install Unauthorized Software on iPhones". PCWorld. Retrieved August 25, 2011.
- Block, Ryan (2008-02-12). "ZiPhone: jailbreak any version iPhone out of the box, including 1.1.3". Engadget. Retrieved 2012-06-10. More than one of
- Charlie Sorrel (July 21, 2008). "Pwnage 2.0 Released: Gadget Lab Jailbreaks iPod Touch". Gadget Lab (Wired). Retrieved November 2, 2011.
- Philip Elmer-DeWitt (July 20, 2008). "Dubious achievement: Hackers 'jailbreak' the iPhone 3G". Apple 2.0 (CNN Money). Retrieved October 26, 2011.
- Erica Sadun (July 20, 2008). "First Look: Pwnage for 2.0". TUAW. Retrieved November 1, 2011.
- Dev Team (May 2011). "Tic tac toe...". Dev Team Blog. Retrieved November 2, 2011.
- iPhone Dev Team (December 27, 2011). "Untethered holidays". Dev Team Blog. Retrieved December 29, 2011.
- Charlie Sorrel (November 25, 2008). "QuickPWN Adds Street View to iPod Touch". Gadget Lab (Wired). Retrieved November 2, 2011.
- Sarah Perez (June 23, 2009). "How to Jailbreak your iPhone to OS 3.0". ReadWriteWeb. Retrieved November 2, 2011.
- Elizabeth Fish (October 13, 2011). "iOS 5 Jailbreak Is Already Here; Geeks Not Surprised". Geek Tech. PCWorld. Retrieved October 26, 2011.
- Edgar Alvarez (June 4, 2012). "Newest version of ultrasn0w unlocks iPhone 4, 3GS on iOS 5.1.1, RedSn0w 0.9.12b1 also released". Engadget. Retrieved June 16, 2012.
- Leslie Katz (July 3, 2009). "iPhone 3GS jailbreak, 'purplera1n,' hits Web". Crave. CNet. Retrieved November 2, 2011.
- Charlie Sorrel (November 5, 2009). "BlackRa1n Plus Blacksn0w: Unlock Any iPhone in Seconds". Gadget Lab (Wired). Retrieved November 2, 2011.
- Thomas Ricker (June 7, 2011). "iOS 5 jailbroken". Engadget. Retrieved October 26, 2011.
- Andy Greenberg (August 1, 2011). "Meet Comex, The 19-Year-Old iPhone Uber-Hacker Who Keeps Outsmarting Apple". Forbes. Retrieved December 23, 2012.
- Dan Goodin (May 3, 2010). "Hackers release jailbreak for iPad and newer iPhones". The Register. Retrieved October 26, 2011.
- John D. Sutter (August 2, 2010). "First iPhone 4 'jailbreak' posted online". CNN Tech (CNN). Retrieved October 26, 2011.
- Sean Hollister (August 1, 2010). "Official: iPhone 4 jailbreak hits from iPhone Dev Team (updated with video)". Engadget. Retrieved September 11, 2010.
- Eric Mack (July 6, 2011). "App enables iPad 2 jailbreak from your browser". Crave. CNET. Retrieved October 26, 2011.
- P. J. Connolly (July 15, 2011). "Apple Fixes Latest iOS Exploit". eWEEK Labs. eWEEK. Retrieved October 23, 2011.
- jean (July 18, 2011). "Analysis of the jailbreakme v3 font exploit". Sogeti ESEC Lab. Retrieved October 23, 2011.
- David Murphy (October 9, 2010). "iPhone Hackers Square Off With Competing iOS 4 Jailbreaks". PCMag. Retrieved November 2, 2011.
- Charlie Sorrel (February 4, 2011). "Untethered iOS 4.2.1 Jailbreak Live". Gadget Lab (Wired). Retrieved November 2, 2011.
- Elizabeth Fish (October 20, 2010). "Oh Hai! Apple TV Officially Hacked". Geek Tech. PCWorld. Retrieved November 2, 2011.
- Blair Hanley Frank (February 7, 2011). "Verizon iPhone Now Available for Jailbreaking". Geek Tech. PCWorld. Retrieved November 2, 2011.
- Eric Mack (January 20, 2012). "Fly, be free! Jailbreak for iPhone 4S, iPad 2 released". Crave. CNet. Retrieved January 22, 2012.
- McKinley Noble (January 20, 2012). "How to Jailbreak Your iPhone 4S and iPad 2 via Absinthe A5". GeekTech. PCWorld. Retrieved January 22, 2012.
- Adrian Kingsley-Hughes (May 26, 2012). "Untethered Jailbreak For Your iOS 5.1.1 iPhone/iPad/iPod Touch Is Here". Tech. Forbes. Retrieved June 1, 2012.
- iPhone Dev Team. "How to Escape Jail".
- "The iPhone / iTouch tif exploit is now officially released!". October 10, 2007. Retrieved August 23, 2012.
- Ryan Block (October 10, 2007). "iPhone and iPod touch v1.1.1 full jailbreak tested, confirmed!". Engadget. Retrieved August 24, 2012.
- PatrickJ (February 1, 2009). "redsn0w Tethered Jailbreak for iPod Touch 2G Released". iSource. Retrieved August 24, 2012.
- Justin Berka (February 3, 2009). "Redsn0w lite jailbreak for 2nd-gen iPod touch released". Infinite Loop. Ars Technica. Retrieved January 9, 2013.
- Ross Miller (June 20, 2009). "Pwnage Tool for iPhone OS 3.0 now live, ultrasn0w still on standby". Engadget. Retrieved October 26, 2011.
- Daniel Brusilovsky (July 3, 2009). "First iPhone 3GS Jailbreak Hits The Web". TechCrunch (The Washington Post). Retrieved October 26, 2011.
- Mike Keller (June 23, 2010). "Does Jailbreaking Still Make Sense with iOS 4.0?". Geek Tech. PCWorld. Retrieved October 26, 2011.
- John Herrman (June 8, 2010). "iOS 4 Jailbroken Within a Day of First Release". Gizmodo. Retrieved November 2, 2011.
- Donald Melanson (October 20, 2010). "Apple TV now jailbreakable with PwnageTool 4.1". Engadget. Retrieved May 22, 2012.
- Mathew J. Schwartz (July 7, 2011). "Apple iOS Zero-Day PDF Vulnerability Exposed". InformationWeek. Retrieved October 23, 2011.
- Mike Keller (August 23, 2011). "Jailbreaking 101: Which Tool to Use to Hack Your iDevice". Geek Tech. PCWorld. Retrieved October 23, 2011.
- Sarah Jacobsson Purewal (October 18, 2011). "How to Jailbreak Your iOS 5 Device". Phones. PCWorld. Retrieved October 23, 2011.
- iPhone Dev Team (March 7, 2012). "March Mayhem". Dev Team Blog. Retrieved April 22, 2012.
- Edgar Alvarez (April 21, 2012). "RedSn0w updated for Mac and Windows: adds Corona A5 jailbreak, other tools". Engadget. Retrieved April 22, 2012.
- Richi Jennings (December 27, 2011). "Yes! Jailbreak iOS 5.0.1 on iPhone 3GS, iPhone 4, iPad... UNTETHERED". The Long View. ComputerWorld. Retrieved December 27, 2011.
- Goncalo Ribeiro (January 29, 2013). "How to Jailbreak Your iOS 6.1 Device". Phones. Redmond Pie. Retrieved January 29, 2013.