iOS jailbreaking

From Wikipedia, the free encyclopedia - View original article

  (Redirected from Jailbreak (iPhone))
Jump to: navigation, search

iOS jailbreaking is the process of removing the limitations imposed by Apple on devices running the iOS operating system through the use of hardware/software exploits – such devices include the iPhone, iPod touch, iPad, and second generation Apple TV. Jailbreaking allows iOS users to gain root access to the operating system, allowing them to download 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 applied to privilege escalation on other computer systems as well. The name refers to breaking the device out of its "jail",[1] 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.

Unlike rooting an Android device, jailbreaking is necessary if the user intends to run software not authorized by Apple. Under the Digital Millennium Copyright Act, jailbreaking iPhones is legal in the United States, although Apple has announced that the practice "can violate the warranty".[2]


Reasons for jailbreaking

Cydia displaying a list of software available for jailbroken devices.

Added features and customizations

One of the main reasons for jailbreaking is to expand the feature set limited by Apple and its App Store. Most jailbreaking tools automatically install Cydia, a native iOS APT client used for finding and installing software for jailbroken iOS devices.[3] 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.[4] Users install these programs for purposes including personalization and customization of the interface,[4] adding desired features and fixing annoyances,[5] and making development work on the device easier by providing access to the filesystem and command-line tools.[6][7]

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.[8] Software-based unlocks have been available since 2008,[9] with each tool applying to a specific iPhone model and baseband version (or multiple models and versions).[10]

Apps denied App Store approval

Some people look to software outside the App Store to express opposition to Apple's control of content through the app approval process: in early 2010, Apple denied an app submitted by Pulitzer Prize-winning cartoonist, Mark Fiore, because it "ridiculed public figures", in violation of Section 3.3.14 of the iPhone Developer Program License Agreement. Apple later called Fiore and asked him to resubmit his app for approval.[11] In late 2010, Apple banned the use of apps that allowed users to donate money to non-profit organization and charities.[12] Apple also denied a WikiLeaks app, stating it "violated their developer guidelines".[13] Most recently, Apple rejected the Drones+ app, which aggregates and presents news of U.S. drone strikes around the globe. Despite the app being an aggregator that presents articles from existing news websites, Apple claims Drones+ violated its guidelines by being "crude and objectionable."[14] As the list of banned apps continues to grow, some users have found jailbreaking to be a viable alternative to Apple’s censorship of content.[15]

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).[16][17][18]


The first iPhone worm, iKee, appeared in early November 2009, created by 21-year-old Australian student Ashley Towns of Wollongong. He told Australian media that he created the worm to raise awareness of security issues: jailbreaking allows users to install a SSH service, which those users can leave in the default unsecure state.[19] 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.[20][21]

On July 15, 2011, Apple released a new version of iOS that closed the exploit used in JailbreakMe 3.0. JailbreakMe exploited a bug in Safari, the iOS Mobile Browser, in a TIFF image PDF file rendering bug. The user would go to the website on the device, and run the exploiting PDF file. The website would use this PDF file to inject code into the root of the device, granting root access and ultimately jailbreaking the device, allowing for the Cydia application to be run. 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 unwittingly download malware by clicking on maliciously crafted PDF files.[22] Before Apple released a fix for this security hole, jailbreak users had access to a fix published by the developer of JailbreakMe.

A 2011 study of a sample of programs available from the BigBoss repository (a default repository in Cydia) found that fewer of them leaked user data than a sample of programs available from the App Store.[23] There are programs available via Cydia designed to add extra privacy features to iOS.[23]

Legal status

United States

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.[24][25] Apple had previously filed comments opposing this exemption and indicated that they did consider 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. This exemption must be reviewed and renewed every three years or else it will expire.

Tim Wu, a professor at Columbia Law School, argued that jailbreaking is "legal, ethical, and just plain fun."[26] 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.[27] Wu did not claim that this exemption applies to those who help others unlock a device or "traffic" in software to do so.[citation needed][need quotation to verify] As of July 26, 2010, the U.S. Copyright Office has approved exemptions to the DMCA that allow iPhone users to jailbreak their devices legally.[28] These exemptions also allow phone users to unlock their phone in order to switch carriers. It is still possible Apple may employ technical countermeasures to prevent jailbreaking or prevent jailbroken phones from functioning, but they will not be able to sue users who jailbreak.[29] It is also unclear whether it is legal to traffic in the tools used to make jailbreaking easy.[29]

Types of jailbreaks

When a device is booting, it loads Apple's own kernel initially. The device must then be exploited and have the kernel patched each time it is turned on.

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.[30]

With a tethered jailbreak, 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; in order for it to start completely and with a patched kernel, it essentially must be "re-jailbroken" with a computer (using the "boot tethered" feature of a jailbreaking tool) each time it is turned on.[31]

A device with a tethered jailbreak may be able to have a semi-tethered solution, which means that when the device starts up on its own, 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.[32] With a semi-tethered solution, the user can also choose to 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,[33] and soon a jailbreak-only game app became available.[34] 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,[35][36] and it included 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.[37]

"Pwnapple" icon used by redsn0w and PwnageTool. (See Pwn.)

The iPhone Dev Team has released a series of free desktop-based jailbreaking tools. They released a version of PwnageTool in July 2008 to jailbreak the new iPhone 3G on iOS 2.0 as well as the iPod touch,[38][39] newly including Cydia as the primary third-party installer for jailbroken software[40] (PwnageTool continues to be updated for untethered jailbreaks of newer iOS versions).[41][42] 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.[43] 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).[44] They continue to maintain redsn0w for jailbreaking most versions of iOS 4 and iOS 5 on most devices.[45] 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.[42] 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.[46]

George Hotz, who had developed the first iPhone unlock, released a jailbreaking tool for the iPhone 3GS on iOS 3.0 called purplera1n,[47] and blackra1n for iOS version 3.1.2 on the iPod touch 3rd generation and other devices.[48] 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.[49]

comex has released multiple jailbreaks for iOS devices, beginning in May 2010 with the Spirit jailbreak for iOS version 3.1.2 on devices including the iPad for the first time.[50] 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).[51][52] In July 2011, comex 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).[53] JailbreakMe 3.0 uses a flaw in PDF file rendering in Mobile Safari.[54][55] He was hired by Apple as an intern in August 2011.[56]

Chronic Dev Team initially released greenpois0n in October 2010, a desktop-based tool for jailbreaking iOS 4.1[57] and later iOS 4.2.1[58] on most devices including the Apple TV,[59] as well as iOS 4.2.6 on CDMA (Verizon) iPhones.[60]

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.[30][31][61][62] In May 2012 they 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.[63]

First jailbreaks

Device/OSRelease dateDate of first jailbreakToolDeveloper
iPhone/iOS 1.0June 29, 2007July 10, 2007[33](no name)iPhone Dev Team[64]
iPod touchSeptember 5, 2007October 10, 2007[65][66](no name)niacin and dre
iPhone 3G/iOS 2.0July 11, 2008July 20, 2008[39]PwnageTooliPhone Dev Team
iPod touch (2nd generation)September 9, 2008January 30, 2009[67]redsn0wiPhone Dev Team and Chronic Dev Team
iOS 3.0March 17, 2009June 19, 2009[68]PwnageTooliPhone Dev Team
iPhone 3GSJune 19, 2009July 3, 2009[69]purplera1nGeorge Hotz
iPadApril 30, 2010May 3, 2010[50]Spiritcomex
iOS 4.0June 21, 2010June 21–23, 2010[70][71]PwnageTooliPhone Dev Team
iPhone 4June 24, 2010August 1, 2010[51]JailbreakMe 2.0comex
Apple TV (2nd generation)September 1, 2010October 20, 2010[72]PwnageTooliPhone Dev Team
iPad 2March 11, 2011July 5, 2011[53]JailbreakMe 3.0comex
iOS 5.0October 12, 2011October 13, 2011[45]redsn0wiPhone Dev Team
iPhone 4SOctober 14, 2011January 20, 2012[30][31]Absinthepod2g, Chronic Dev Team, iPhone Dev Team
Apple TV (3rd generation)March 7, 2012(none)
iPad (3rd generation)March 16, 2012May 25, 2012[63]Absinthe 2.0pod2g, Chronic Dev Team, iPhone Dev Team
iOS 6.0September 19, 2012September 19, 2012redsn0w betaiPhone Dev Team
iPhone 5September 21, 2012(none)

Recent releases of jailbreaking tools

Software NameRelease DateHardwareFirmwareUntethered?Publisher
JailbreakMe 3.0[73]July 5, 2011[73][73]4.2.6–4.2.8
4.3–4.3.3[73][notes 1]
Seas0npass[74][75][76]October 18, 2011[74]2nd generation Apple TV[74][75][76]
redsn0w 0.9.12 beta 2[77][78]June 8, 2012[79][77][42][80]4.1–5.1.1Untethered: 4.1–4.3.3, 4.2.6–4.2.8, 5.0.1, 5.1.1[79]

Tethered: 4.2.9–4.2.10, 4.3.4–4.3.5, 5.0, 5.1[42][notes 1] (not available for iPhone 4S, iPad 2, or iPad 3rd generation)[80]

iPhone Dev Team[77][42]
Absinthe 2.0.4[61]May 30, 2012[62]5.1.1[62]Yes[30]pod2g, Chronic Dev Team, iPhone Dev Team[61]

See also


  1. ^ a b 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.


  1. ^ Mike Keller (February 13, 2012). "Geek 101: What Is Jailbreaking?". Geek Tech. PCWorld. Retrieved February 15, 2012. 
  2. ^ Leander Kahney (July 26, 2010). "Apple’s Official Response To DMCA Jailbreak Exemption: It Voids Your Warranty". Cult Of Mac. Retrieved October 26, 2011. 
  3. ^ Chris Foresman (December 13, 2010). "iPhone jailbreaker set to bring Cydia to Mac OS X". Infinite Loop. Ars Technica. Retrieved August 2, 2011. 
  4. ^ a b Adam Dachis (March 14, 2011). "How to Get the Most Out of Your Jailbroken iOS Device". Lifehacker. Retrieved August 2, 2011. 
  5. ^ Jenna Wortham (May 12, 2009). "Unofficial Software Incurs Apple's Wrath". The New York Times. Retrieved August 2, 2011. 
  6. ^ Zdziarski, Jonathan (2008). iPhone Open Application Development: Write Native Applications Using the Open Source Tool Chain. pp. 3–4. 
  7. ^ Landau, Ted (2009). Take control of your iPhone. p. 107. 
  8. ^ Brian X. Chen (August 7, 2009). "6 Reasons to Jailbreak Your iPhone". Gadget Lab. Wired. Retrieved May 1, 2012. 
  9. ^ Ben Wilson (February 8, 2008). "Software-based unlock for iPhone 1.1.3, step-by-step instructions". iPhone Atlas. CNet. Retrieved May 1, 2012. 
  10. ^ Ian Paul (December 22, 2008). "3G iPhone Unlock Expected". Today @ PCWorld. PCWorld. Retrieved May 1, 2012. 
  11. ^ Ryan Singel (April 15, 2010). "Apple App Store Bans Pulitzer-Winning Satirist for Satire". Wired. Retrieved February 12, 2011. 
  12. ^ Strom, Stephanie (2010-12-08). "Donations Ban on iPhone Apps Irritates Nonprofits". The New York Times. Retrieved 2011-02-12. 
  13. ^ Helft, Miguel (2010-12-21). "Why Apple Removed a WikiLeaks App From Its Store". The New York Times. Retrieved 2011-02-12. 
  14. ^ Christina Bonnington and Spencer Ackerman (August 30, 2012). "Apple Rejects App That Tracks U.S. Drone Strikes". Wired. Retrieved 2012-09-03. 
  15. ^ Ki Mae Heussner (2010-04-24). "Banned by Apple: 9 iPhone App Rejects". Retrieved 2011-02-12. 
  16. ^ Ellis Hamburger (May 3, 2011). "The Truth About Jailbreaking Your iPhone: The 5 Biggest Drawbacks". SAI: Tools. Business Insider. Retrieved October 26, 2011. 
  17. ^ Adam Dachis (May 5, 2011). "Four Reasons Not to Jailbreak Your iPhone, iPod touch, or iPad". Lifehacker. Retrieved October 26, 2011. 
  18. ^ Brennon Slattery (August 3, 2010). "5 Reasons to Jailbreak Your iPhone – and 5 Reasons Not". Today @ PCWorld. PCWorld. Retrieved October 26, 2011. 
  19. ^ Brigid Andersen (November 9, 2009). "Australian admits creating first iPhone virus". ABC Online. Retrieved October 26, 2011. 
  20. ^ "New iPhone worm can act like botnet say experts". BBC News. 2009-11-23. Retrieved 2010-04-10. 
  21. ^ Mikko (2009-11-22). "Malicious iPhone Worm". News from the Lab. F-secure. Retrieved 2010-04-10. 
  22. ^ Robertson, Jordan (2011-07-08). "Security holes discovered in iPhones, iPads". News & Record. Associated Press. Retrieved 2011-07-09. 
  23. ^ a b Greenberg, Andy (2012-02-14). "Unauthorized iPhone And iPad Apps Leak Private Data Less Often Than Approved Ones". Tech (Forbes). Retrieved 2012-02-15. 
  24. ^ "Copyright office provides exemption to DMCA". United States Copyright Office. 2009-02-12. Retrieved 2009-07-17. 
  25. ^ Declan McCullagh (July 26, 2010). "Feds say mobile-phone jailbreaking is OK". Politics and Law. CNET. Retrieved October 26, 2011. 
  26. ^ Tim Wu (October 4, 2007). "The iPhone Freedom Fighters". Technology. Slate. Retrieved October 26, 2011. 
  27. ^ "Federal Register: Exemption to Prohibition on Circumvention of Copyright Protection Systems for" (PDF). Retrieved 2010-09-11. 
  28. ^ David Goldman (2010-07-26). "Jailbreaking iPhone apps is now legal". CNN Money. Retrieved 2010-09-11. 
  29. ^ a b "Transcript of "Jailbreak?" (July 30, 2010)". On The Media. 2010-07-30. Retrieved 2010-09-11. 
  30. ^ a b c d 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. 
  31. ^ a b c John Paul Titlow (January 20, 2012). "Now You Can Jailbreak Your iPhone 4S and iPad 2". ReadWriteWeb. Retrieved January 20, 2012. 
  32. ^ Fish, Elizabeth (2011-10-24). "Semi-tethered iOS 5 Jailbreak Developed, Useful On The Move". Geek Tech. PCWorld. Retrieved 2012-04-22. 
  33. ^ a b Ricker, Thomas (2007-07-10). "iPhone Hackers: "we have owned the filesystem"". Engadget. Retrieved 2009-07-17. 
  34. ^ Topolsky, Joshua (2007-08-06). "First third-party "game" app appears for iPhone". Engadget. Retrieved 2009-07-17. 
  35. ^ Wilson, Ben (2007-10-10). "Official iPhone 1.1.1 jailbreak released with easy-to-follow instructions; does not require TIFF exploit". Retrieved 2009-11-10. 
  36. ^ Gregg Keizer (October 29, 2007). "Hacker Software Can Install Unauthorized Software on iPhones". PCWorld. Retrieved August 25, 2011. 
  37. ^ Block, Ryan (2008-02-12). "ZiPhone: jailbreak any version iPhone out of the box, including 1.1.3". Engadget. Retrieved 2012-06-10. 
  38. ^ Charlie Sorrel (July 21, 2008). "Pwnage 2.0 Released: Gadget Lab Jailbreaks iPod Touch". Gadget Lab (Wired). Retrieved November 2, 2011. 
  39. ^ a b Philip Elmer-DeWitt (July 20, 2008). "Dubious achievement: Hackers 'jailbreak' the iPhone 3G". Apple 2.0 (CNN Money). Retrieved October 26, 2011. 
  40. ^ Erica Sadun (July 20, 2008). "First Look: Pwnage for 2.0". TUAW. Retrieved November 1, 2011. 
  41. ^ Dev Team (May 2011). "Tic tac toe...". Dev Team Blog. Retrieved November 2, 2011. 
  42. ^ a b c d e iPhone Dev Team (December 27, 2011). "Untethered holidays". Dev Team Blog. Retrieved December 29, 2011. 
  43. ^ Charlie Sorrel (November 25, 2008). "QuickPWN Adds Street View to iPod Touch". Gadget Lab (Wired). Retrieved November 2, 2011. 
  44. ^ Sarah Perez (June 23, 2009). "How to Jailbreak your iPhone to OS 3.0". ReadWriteWeb. Retrieved November 2, 2011. 
  45. ^ a b Elizabeth Fish (October 13, 2011). "iOS 5 Jailbreak Is Already Here; Geeks Not Surprised". Geek Tech. PCWorld. Retrieved October 26, 2011. 
  46. ^ 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. 
  47. ^ Leslie Katz (July 3, 2009). "iPhone 3GS jailbreak, 'purplera1n,' hits Web". Crave. CNet. Retrieved November 2, 2011. 
  48. ^ Charlie Sorrel (November 5, 2009). "BlackRa1n Plus Blacksn0w: Unlock Any iPhone in Seconds". Gadget Lab (Wired). Retrieved November 2, 2011. 
  49. ^ Thomas Ricker (June 7 2011). "iOS 5 jailbroken". Engadget. Retrieved October 26, 2011. 
  50. ^ a b Dan Goodin (May 3, 2010). "Hackers release jailbreak for iPad and newer iPhones". The Register. Retrieved October 26, 2011. 
  51. ^ a b John D. Sutter (August 2, 2010). "First iPhone 4 'jailbreak' posted online". CNN Tech (CNN). Retrieved October 26, 2011. 
  52. ^ Sean Hollister (August 1, 2010). "Official: iPhone 4 jailbreak hits from iPhone Dev Team (updated with video)". Engadget. Retrieved September 11, 2010. 
  53. ^ a b Eric Mack (July 6, 2011). "App enables iPad 2 jailbreak from your browser". Crave. CNET. Retrieved October 26, 2011. 
  54. ^ P. J. Connolly (July 15, 2011). "Apple Fixes Latest iOS Exploit". eWEEK Labs. eWEEK. Retrieved October 23, 2011. 
  55. ^ jean (July 18, 2011). "Analysis of the jailbreakme v3 font exploit". Sogeti ESEC Lab. Retrieved October 23, 2011. 
  56. ^ Andy Greenberg (August 26, 2011). "Apple Hacker Extraordinaire Comex Takes An Internship At Apple". Forbes. Retrieved November 2, 2011. 
  57. ^ David Murphy (October 9, 2010). "iPhone Hackers Square Off With Competing iOS 4 Jailbreaks". PCMag.,2817,2370522,00.asp#fbid=d7I6xbRm1XV. Retrieved November 2, 2011. 
  58. ^ Charlie Sorrel (February 4, 2011). "Untethered iOS 4.2.1 Jailbreak Live". Gadget Lab (Wired). Retrieved November 2, 2011. 
  59. ^ Elizabeth Fish (October 20, 2010). "Oh Hai! Apple TV Officially Hacked". Geek Tech. PCWorld. Retrieved November 2, 2011. 
  60. ^ Blair Hanley Frank (February 7, 2011). "Verizon iPhone Now Available for Jailbreaking". Geek Tech. PCWorld. Retrieved November 2, 2011. 
  61. ^ a b c Eric Mack (January 20, 2012). "Fly, be free! Jailbreak for iPhone 4S, iPad 2 released". Crave. CNet. Retrieved January 22, 2012. 
  62. ^ a b c McKinley Noble (January 20, 2012). "How to Jailbreak Your iPhone 4S and iPad 2 via Absinthe A5". GeekTech. PCWorld. Retrieved January 22, 2012. 
  63. ^ a b 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. 
  64. ^ iPhone Dev Team. "How to Escape Jail". 
  65. ^ "The iPhone / iTouch tif exploit is now officially released!". October 10, 2007. Retrieved August 23, 2012. 
  66. ^ Ryan Block (October 10, 2007). "iPhone and iPod touch v1.1.1 full jailbreak tested, confirmed!". Engadget. Retrieved August 24, 2012. 
  67. ^ PatrickJ (February 1, 2009). "redsn0w Tethered Jailbreak for iPod Touch 2G Released". iSource. Retrieved August 24, 2012. 
  68. ^ Ross Miller (June 20, 2009). "Pwnage Tool for iPhone OS 3.0 now live, ultrasn0w still on standby". Engadget. Retrieved October 26, 2011. 
  69. ^ Daniel Brusilovsky (July 3, 2009). "First iPhone 3GS Jailbreak Hits The Web". TechCrunch (The Washington Post). Retrieved October 26, 2011. 
  70. ^ Mike Keller (June 23, 2010). "Does Jailbreaking Still Make Sense with iOS 4.0?". Geek Tech. PCWorld. Retrieved October 26, 2011. 
  71. ^ John Herrman (June 8, 2010). "iOS 4 Jailbroken Within a Day of First Release". Gizmodo. Retrieved November 2, 2011. 
  72. ^ Donald Melanson (October 20, 2010). "Apple TV now jailbreakable with PwnageTool 4.1". Engadget. Retrieved May 22, 2012. 
  73. ^ a b c d e f Mathew J. Schwartz (July 7, 2011). "Apple iOS Zero-Day PDF Vulnerability Exposed". InformationWeek. Retrieved October 23, 2011. 
  74. ^ a b c d e Mike Keller (August 23, 2011). "Jailbreaking 101: Which Tool to Use to Hack Your iDevice". Geek Tech. PCWorld. Retrieved October 23, 2011. 
  75. ^ a b c d e james (August 19, 2011). "Seas0nPass Updated for AppleTV 4.3". Firecore. Retrieved October 23, 2011. 
  76. ^ a b c d james (October 18, 2011). "Seas0nPass Updated for AppleTV 4.4". Firecore. Retrieved December 17, 2011. 
  77. ^ a b c Sarah Jacobsson Purewal (October 18, 2011). "How to Jailbreak Your iOS 5 Device". Phones. PCWorld. Retrieved October 23, 2011. 
  78. ^ iPhone Dev Team (March 7, 2012). "March Mayhem". Dev Team Blog. Retrieved April 22, 2012. 
  79. ^ a b 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. 
  80. ^ a b Edgar Alvarez (April 21, 2012). "RedSn0w updated for Mac and Windows: adds Corona A5 jailbreak, other tools". Engadget. Retrieved April 22, 2012.