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'''Jeff jailbreaking''' is the process of removing software restrictions imposed by [[Apple Inc.|Apple]] on it's devices running [[iOS]] ([[Operating system|Operating System]]). Jailbreaking permits [[Superuser|root access]] to the iOS file system and manager, allowing the download of additional applications, extensions, and themes and hence expands the feature set limited by Apple and its App Store that are unavailable officially.
'''iOS jailbreaking''' is the process of removing software restrictions imposed by [[Apple Inc.|Apple]] on it's devices running [[iOS]] ([[Operating system|Operating System]]). Jailbreaking permits [[Superuser|root access]] to the iOS file system and manager, allowing the download of additional applications, extensions, and themes and hence expands the feature set limited by Apple and its App Store that are unavailable officially.


Jeff jailbreaking started as soon as the original iPhone became available in July 2007 and {{as of| December 2015|lc=on}} has continued into the present day. [[Jay Freeman]] was the known as the Father of Jailbreaking and is the first to create jailbreak and [[Cydia]], the gateway for installing all the customisations and tweaks. Apple has responded with updates to iOS patching exploits and with new hardware. Jailbreaking communities have not been legally threatened. The legal status of jailbreaking is unclear in most countries. In 2010, 2012 and 2015 the U.S. Copyright Office has expressively approved exemptions allowing smartphone users to jailbreak their devices.
iOS jailbreaking started as soon as the original iPhone became available in July 2007 and {{as of| December 2015|lc=on}} has continued into the present day. [[Jay Freeman]] was the known as the Father of Jailbreaking and is the first to create jailbreak and [[Cydia]], the gateway for installing all the customisations and tweaks. Apple has responded with updates to iOS patching exploits and with new hardware. Jailbreaking communities have not been legally threatened. The legal status of jailbreaking is unclear in most countries. In 2010, 2012 and 2015 the U.S. Copyright Office has expressively approved exemptions allowing smartphone users to jailbreak their devices.


==Definition==
==Definition==
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== Types of jailbreaks ==
== Types of jailbreaks ==
When a device is booting, it loads Apple's own [[Kernel (computing)|kernel]] initially. The device must then be [[Exploit (computer security)|exploited]] and have the kernel [[Patch (computing)|patched]] each time it is turned on.
When a device is booting, it loads Apple's own [[Kernel (computing)|kernel]] initially. The device must then be [[Exploit (computer security)|exploited]] and have the kernel [[Patch (computing)|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 – thus enabling the user to boot without the need to use a computer.<ref name="iphone4s-engadget"/> These jailbreaks are harder to make and take a lot of reverse engineering and years of experience.

With a '''"tethered" jailbreak''', a computer is needed to turn the device 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.<ref name="iphone4s-readwriteweb"/> With a tethered jailbreak, you can still restart [[SpringBoard]] ("respring") on the device without needing to reboot.

There is also '''"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 such as making phone calls, or texting.<ref name="pcworld-semitether">{{cite web|last=Fish |first=Elizabeth |url=http://www.pcworld.com/article/242469/semitethered_ios_5_jailbreak_developed_useful_on_the_move.html |title=Semi-tethered iOS 5 Jailbreak Developed, Useful On The Move |work=Geek Tech |publisher=PCWorld |date=October 24, 2011 |accessdate=April 22, 2012}}</ref> 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).

=== Comparison to Android rooting ===
Jailbreaking of iOS devices has sometimes been compared to "[[Rooting (Android OS)|rooting]]" of [[Android (operating system)|Android]] devices. Although both concepts involve privilege escalation, they differ in scope. Some Android devices allow users to modify or replace the operating system after unlocking the bootloader;{{citation needed|date=December 2015}} enabling installation of apps that have not been reviewed or authorized by a central authority such as Google—known as "[[sideloading]]"—is a simple user preference.<ref>{{cite web|last1=Hildenbrand|first1=Jerry|title=Android A to Z: What is sideloading?|url=http://www.androidcentral.com/what-sideloading-android-z|website=Android Central|accessdate=9 July 2014|date=2 Feb 2012}}</ref>

iOS is engineered with security measures including a "locked bootloader" to prevent users from modifying the operating system, and to prevent apps from gaining root privileges; jailbreaking an iOS device to defeat all security measures presents a significant technical challenge. It violates Apple's end-user license agreement for iOS.<ref>{{cite web|title=Unauthorized modification of iOS can cause security vulnerabilities, instability, shortened battery life, and other issues|url=http://support.apple.com/kb/ht3743|website=Apple Support|accessdate=9 July 2014|quote=[U]nauthorized modification of iOS is a violation of the iOS end-user software license agreement and because of this, Apple may deny service for an iPhone, iPad, or iPod touch that has installed any unauthorized software.}}</ref> Until 2015 [[sideloading]] apps in general was difficult for most individual users, requiring them to purchase developer membership, while corporations could install private applications onto corporate phones.{{citation needed|date=December 2015}} After 2015, this became free for all users, but apps installed this way have the restrictions of all other apps.

== Security, privacy, and stability ==
The first [[iPhone]] [[Computer worm|worm]], iKee, appeared in early November 2009, created by a 21-year-old [[Australia]]n student in the town of [[Wollongong, New South Wales|Wollongong]]. He told Australian media that he created the worm to raise awareness of security issues: jailbreaking allows users to install an [[Secure Shell|SSH]] service, which those users can leave in the default insecure state.<ref>{{cite news |title= Australian admits creating first iPhone virus |author= Brigid Andersen |url= http://www.abc.net.au/news/2009-11-09/australian-admits-creating-first-iphone-virus/1135474 |newspaper= [[ABC Online]] |date= November 9, 2009 |accessdate=October 26, 2011}}</ref> 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.<ref>{{Cite news|url=http://news.bbc.co.uk/2/hi/technology/8373739.stm |title=New iPhone worm can act like botnet say experts |publisher=BBC News |date=November 23, 2009 |accessdate=April 10, 2010}}</ref><ref>{{cite web|url=http://www.f-secure.com/weblog/archives/00001822.html |title=Malicious iPhone Worm |work= News from the Lab |publisher=F-secure |author= Mikko |date=November 22, 2009 |accessdate=April 10, 2010}}</ref>
In 2010 blogger [[John Gruber]], who is close to Apple, said that users misunderstood some jailbreak exploits and that they were more serious than they appear. He commented that "it's odd how the press is mostly covering this as 'jailbreaking now more convenient' rather than 'remote code exploit now in the wild'", pointing out that the exploit allowed the creator of a malicious website to [[Drive-by download|take control]] of iPhones accessing it.<ref>{{cite web|last1=Gruber| first1=John| title=PDF security exploit|url=http://daringfireball.net/linked/2010/08/02/jailbreakme|website=Daring Fireball|accessdate=15 August 2015}}</ref>

Restoring a device with iTunes can remove a jailbreak.<ref>{{cite web |url= http://www.forbes.com/sites/adriankingsleyhughes/2012/05/28/should-i-jailbreak-my-iphone-and-other-jailbreaking-questions-answered/ |title= 'Should I Jailbreak My iPhone?' And Other Jailbreaking Questions Answered |author= Adrian Kingsley-Hughes |date= May 28, 2011 |work= Tech |publisher= Forbes |accessdate=November 14, 2012}}</ref><ref>{{cite web |url= http://howto.cnet.com/8301-11310_39-57462343-285/how-to-unjailbreak-your-iphone-ipad-or-ipod-touch/ |title= How to unjailbreak your iPhone, iPad, or iPod Touch and is illegal |author= Sharon Vaknin |date= June 27, 2012 |work= How To |publisher= CNet |accessdate=November 14, 2012}}</ref><ref>{{cite web |url= http://www.pcworld.com/article/156099/best_iphone_apps.html |title= The Best IPhone Apps Not in the App Store |author= Christopher Breen |date= December 29, 2008 |work= Macworld |publisher= PCWorld |accessdate=November 14, 2012}}</ref>

In 2012, Forbes staff analyzed a UCSB study on 1407 free programs available from Apple and a third party source. Of the 1,407 free apps investigated, 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 App Store leaked none. Unauthorized apps tended to respect privacy better than official ones.<ref name="forbes-leak"/> Also, there is a program called PrivaCy that allows user to control the upload of usage statistics to remote servers.<ref name="forbes-leak">{{cite news |url=http://www.forbes.com/sites/andygreenberg/2012/02/14/unauthorized-iphone-and-ipad-apps-leak-private-data-less-often-than-approved-ones/ |title=Unauthorized iPhone And iPad Apps Leak Private Data Less Often Than Approved Ones |last=Greenberg |first=Andy |work=Tech |publisher=Forbes |date=February 14, 2012 |accessdate=February 15, 2012}}</ref>

Installing software published outside the [[App Store (iOS)|App Store]] has the potential to affect [[Battery (electricity)|battery]] life and system stability if the software is poorly optimized or frequently uses resource-draining services (such as [[3G]] or [[Wi-Fi]]).<ref>{{cite web |url= http://www.businessinsider.com/reasons-not-to-jailbreak-iphone-2011-5 |title= The Truth About Jailbreaking Your iPhone: The 5 Biggest Drawbacks |author= Ellis Hamburger |date= May 3, 2011 |work= SAI: Tools |publisher= Business Insider |accessdate=October 26, 2011 }}</ref><ref>{{cite web |url= http://lifehacker.com/5799007/why-you-should-not-jailbreak-your-iphone-ipod-touch-or-ipad |title= Four Reasons Not to Jailbreak Your iPhone, iPod touch, or iPad |author= Adam Dachis |date= May 5, 2011 |work= |publisher= Lifehacker |accessdate=October 26, 2011 }}</ref><ref>{{cite web |url= http://www.pcworld.com/article/202441/5_reasons_to_jailbreak_your_iphone_and_5_reasons_not.html |title= 5 Reasons to Jailbreak Your iPhone – and 5 Reasons Not |author= Brennon Slattery |date= August 3, 2010 |work= Today @ PCWorld |publisher= PCWorld |accessdate=October 26, 2011 }}</ref> However, even apps from the App Store are known to cause battery issues whilst running in the background.<ref>{{cite web |url= https://www.macstories.net/linked/the-background-data-and-battery-usage-of-facebooks-ios-app/ |title= The Background Data and Battery Usage of Facebook’s iOS App |work= |publisher=MacStories |accessdate=January 6, 2016}}</ref>

In August 2015 the [[KeyRaider]] malware was discovered that affects only jailbroken iPhones.<ref>{{cite news| url=http://www.inc.com/joseph-steinberg/massive-iphone-user-data-breach-what-you-need-to-know.html |work=Inc. | title=Massive iPhone User Data Breach: What You Need to Know | date=August 31, 2015 | accessdate=September 2, 2015 |author=Joseph Steinberg |authorlink=Joseph Steinberg}}</ref>

==History of exploit-disabling patch releases ==

Apple has released various updates to iOS that patch exploits used by jailbreak utilities; this includes a patch released in iOS 6.1.3 to software exploits used by the original [[evasi0n]] iOS 6&ndash;6.1.2 jailbreak, in iOS 7.1 patching the Evasi0n 7 jailbreak for iOS 7&ndash;7.0.6-7.1 beta 3. Bootrom exploits (exploits found in the hardware of the device) cannot be patched by Apple system updates, but can be fixed in hardware revisions such as new chips or new hardware in its entirety, as occurred with the iPhone 3GS in 2009.<ref>{{Cite web|title = Apple adds jailbreak resistance to recent iPhone 3GS models|url = http://arstechnica.com/apple/2009/10/apple-adds-jailbreak-resistance-to-recent-iphone-3gs-models/|accessdate = 2015-06-20}}</ref>

On July 15, 2011, Apple released a new iOS version that closed the exploit used in [[JailbreakMe]] 3.0. The German [[Federal Office for Information Security]] had reported that JailbreakMe uncovered the "critical weakness" that information could be stolen or unwillingly downloaded [[malware]] by iOS users clicking on maliciously crafted [[PDF]] files.<ref>{{cite news|url=http://www.news-record.com/content/2011/07/08/article/security_holes_discovered_in_iphones_ipads|title=Security holes discovered in iPhones, iPads|last=Robertson|first=Jordan|work=[[News & Record]]|agency=[[Associated Press]]|date=July 8, 2011|accessdate=July 9, 2011}}</ref> Before Apple released a fix for this security hole, jailbreak users had access to a fix published by the developer of JailbreakMe.{{citation needed|date=December 2015}}

In Q3 2014 Apple released [[iOS]] 8.1.3 that patched up the exploits used in jailbreak for [[iOS]] 8.0-8.1.2. It was not possible to jailbreak until the iOS 8.3 update. The iOS 9.1 update on October 21, 2015, included a patch for the Pangu iOS 9.0-9.0.2 Jailbreak.<ref name=":0" />

At the [[Apple Worldwide Developers Conference]] (WWDC) June 2015, Apple announced that [[iOS 9]] will feature a new 'rootless' security system, making it more difficult to replace system files. {{citation needed|date=December 2015}}

On August 13, 2015, Apple updated iOS to 8.4.1, patching the TaiG exploit. Pangu and Taig teams both said they were working on exploiting iOS 8.4.1, and Pangu demonstrated these chances at the WWDC 2015.<ref>{{cite web|url=http://www.mobileswire.com/ios-8-4-1-jailbreak-status-updated/|title=Taig and Pangu working on Jailbreak for IOS 8.4.1|accessdate=8 September 2015}}</ref>

On September 16, 2015, iOS 9 was announced and made available, has made rapid growth install base {{clarify|date=December 2015}} from iOS 8; it was released with a new "Rootless" security system, dubbed a "heavy blow" to the jailbreaking community.<ref>{{cite web|url=http://ioshacker.com/news/ios-9s-rootless-security-system-dubbed-as-a-heavy-blow-to-jailbreak-community|title=iOS 9’s Rootless security system dubbed as a ‘heavy blow’ to jailbreak community|accessdate=10 October 2015}}</ref>

On October 21, 2015, seven days after the Pangu iOS 9.0-9.0.2 Jailbreak release, Apple pushed the iOS 9.1 update, which contained a patch that rendered it nonfunctional.<ref name=":0">{{Cite web|title = Apple’s iOS 9.1 Shuts Down The Pangu Hacking Team’s Jailbreak|url = http://social.techcrunch.com/2015/10/21/apples-ios-9-1-shuts-down-the-pangu-hacking-teams-jailbreak/|website = TechCrunch|accessdate = 2015-11-11|first = Sarah|last = Perez}}</ref>

==Legal status==
The legal status of jailbreaking 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 Copyright Treaty|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 [[Copyright Directive|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,<ref name="Duncan Geere">{{cite web |author= Duncan Geere |url=http://www.wired.co.uk/news/archive/2010-07/28/investigation-is-it-legal-to-jailbreak-a-uk-iphone |title=Investigation: Is it legal to jailbreak a UK iPhone? |publisher= Wired UK |date=July 28, 2010 |accessdate=October 26, 2012}}</ref> but member states vary on the implementation of the directive.

While Apple technically does not support jailbreaking as a violation of its EULA, jailbreaking communities have generally not been legally threatened by Apple. At least two prominent jailbreakers have been given positions at Apple, albeit in at least one case a temporary one.<ref>{{cite web|last1=Greenberg|first1=Andy|title=iPhone Uber-Hacker Comex Is Out At Apple|url=http://www.forbes.com/sites/andygreenberg/2012/10/18/iphone-uber-hacker-comex-is-out-at-apple/|website=Forbes|accessdate=15 August 2015}}</ref><ref name="After Doing “Insane Things With iOS,” Jailbreak Hacker Winocm Joins Apple">{{cite web|last1=Heath|first1=Alex|title=After Doing "Insane Things With iOS," Jailbreak Hacker Winocm Joins Apple|url=http://www.cultofmac.com/267419/ios-jailbreak-hacker-winocm-joining-apple-later-year/|website=Cult of Mac|accessdate=22 November 2015}}</ref> Apple has also regularly (though possibly somewhat jokingly) thanked jailbreak communities for detecting security holes in iOS release notes.<ref name="8.4.1 release notes">{{cite web|title=8.4.1 release notes|url=https://support.apple.com/en-gb/HT205030|publisher=Apple|accessdate=15 August 2015}}</ref>

=== Australia ===
In 2010, [[Electronic Frontiers Australia]] said that it is unclear whether jailbreaking is legal in Australia, and that anti-circumvention laws may apply.<ref>{{cite web |url= http://www.pcauthority.com.au/News/223713,could-jailbreaking-your-iphone-land-you-in-jail.aspx |title= Could jailbreaking your iPhone land you in jail? |author= Rosalyn Page |date= August 5, 2010 |work= |publisher= PC & Tech Authority |accessdate=January 21, 2013}}</ref> These laws had been strengthened by the [[Copyright law of Australia#Copyright Amendment Act 2006|Copyright Amendment Act 2006]].

=== Canada ===
In November 2012, Canada [[Copyright law of Canada#Reform (1988-2012)|amended its Copyright Act]] with new provisions prohibiting tampering with digital locks, with exceptions including software interoperability.<ref>{{cite web |url= http://www.michaelgeist.ca/content/view/6692/125/ |title= Canadian Copyright Reform In Force: Expanded User Rights Now the Law |author= [[Michael Geist]] |date= November 7, 2012 |work= |publisher= michaelgeist.ca |accessdate=November 13, 2012}}</ref> 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 (39th Canadian Parliament, 2nd Session)|Bill C-61]], and [[Bill C-32 (40th Canadian Parliament, 3rd Session)|Bill C-32]]) to prohibit tampering with digital locks, along with initial proposals for C-11 that were more restrictive,<ref>{{cite web |url=https://www.eff.org/deeplinks/2012/02/canadas-c-11-bill-and-hazards-digital-locks-provisions |title=Canada’s C-11 Bill and the Hazards of Digital Locks Provisions |publisher=Electronic Frontier Foundation |date=February 10, 2012 |accessdate=October 17, 2012}}</ref> 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.<ref>{{cite news |author= The Canadian Press |url= http://www.ctvnews.ca/phone-jailbreaking-allows-users-to-hack-their-phone-1.707707 |title= Phone 'jailbreaking' allows users to hack their phone |publisher= CTV News |date=October 13, 2011 |accessdate=October 17, 2012}}</ref>


=== India ===
=== India ===
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=== United Kingdom ===
=== United Kingdom ===
The law [[Copyright and Related Rights Regulations 2003]] makes circumventing DRM protection measures legal for the purpose of interoperability but not copyright infringement. Jailbreaking may be a form of circumvention covered by that law, but this has not been tested in court.<ref name="Duncan Geere">{{cite web |author = Duncan Geere|url = http://www.wired.co.uk/news/archive/2010-07/28/investigation-is-it-legal-to-jailbreak-a-uk-iphone|title = Investigation: Is it legal to jailbreak a UK iPhone?|publisher = Wired UK|date = July 28, 2010|accessdate = October 26, 2012}}</ref><ref>{{cite web |url= http://www.pcadvisor.co.uk/how-to/apple/3344366/how-jailbreak-your-iphone/ |title= How to jailbreak your iPhone: Unleash the full potential of your iPhone |author= Jim Martin |date= March 14, 2012 |work= |publisher= PC Advisor |accessdate=January 21, 2013}}</ref> Competition laws may also be relevant.<ref>{{cite web |url= http://www.electronicsweekly.com/Articles/30/07/2010/49177/iphone-jailbreaking-is-okay-under-eu-law.htm |title= iPhone jailbreaking is 'okay under EU law' |author= Warwick Ashford |date= July 30, 2010 |work= Computer Weekly |publisher= Electronics Weekly |accessdate=January 21, 2013}}</ref>
The law [[Copyright and Related Rights Regulations 2003]] makes circumventing DRM protection measures legal for the purpose of interoperability but not copyright infringement. Jailbreaking may be a form of circumvention covered by that law, but this has not been tested in court.<ref name="Duncan Geere"/><ref>{{cite web |url= http://www.pcadvisor.co.uk/how-to/apple/3344366/how-jailbreak-your-iphone/ |title= How to jailbreak your iPhone: Unleash the full potential of your iPhone |author= Jim Martin |date= March 14, 2012 |work= |publisher= PC Advisor |accessdate=January 21, 2013}}</ref> Competition laws may also be relevant.<ref>{{cite web |url= http://www.electronicsweekly.com/Articles/30/07/2010/49177/iphone-jailbreaking-is-okay-under-eu-law.htm |title= iPhone jailbreaking is 'okay under EU law' |author= Warwick Ashford |date= July 30, 2010 |work= Computer Weekly |publisher= Electronics Weekly |accessdate=January 21, 2013}}</ref>


=== United States ===
=== United States ===

Revision as of 01:17, 13 January 2016

iOS jailbreaking is the process of removing software restrictions imposed by Apple on it's devices running iOS (Operating System). Jailbreaking permits root access to the iOS file system and manager, allowing the download of additional applications, extensions, and themes and hence expands the feature set limited by Apple and its App Store that are unavailable officially.

iOS jailbreaking started as soon as the original iPhone became available in July 2007 and as of December 2015 has continued into the present day. Jay Freeman was the known as the Father of Jailbreaking and is the first to create jailbreak and Cydia, the gateway for installing all the customisations and tweaks. Apple has responded with updates to iOS patching exploits and with new hardware. Jailbreaking communities have not been legally threatened. The legal status of jailbreaking is unclear in most countries. In 2010, 2012 and 2015 the U.S. Copyright Office has expressively approved exemptions allowing smartphone users to jailbreak their devices.

Definition

iOS jailbreaking is the process of removing software restrictions imposed by iOS, Apple Inc's operating system, on its devices including the iPhone, iPod touch, iPad, and second-generation Apple TV. Jailbreaking is done by using software exploits, and it permits root access to the iOS file system and manager, so applications, extensions, and themes unavailable through the official Apple App Store can be downloaded.[citation needed]

Jailbreaking in general means breaking the device out of its "jail",[1] a metaphor used in Unix-style systems, for example in "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.[citation needed]

Jailbreaking is a form of privilege escalation,[2][3] and describes privilege escalation on devices by other manufacturers as well.[4][5]

Motivations

One of the reasons for jailbreaking is to expand the feature set limited by Apple and its App Store.[6] Apple checks apps for compliance with its iOS Developer Program License Agreement before accepting them for distribution in the App Store. However, their reasons for banning apps are not limited to safety and security and may be regarded as arbitrary and capricious.[7] In one case, Apple mistakenly banned an app by a Pulitzer-Winning cartoonist because it violated its developer license agreement, which specifically bans apps that “contain content that ridicules public figures."[8] To access banned apps,[9] users rely on jailbreaking to circumvent Apple's censorship of content and features. Jailbreaking permits the downloading of programs not approved by Apple,[10] such as user interface customization, pornography, and religious apps.[11]

Device customization

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.[12] Users install these programs for purposes including personalization and customization of the interface by tweaks developed by developers and designers,[12] adding desired features and fixing annoyances,[13] and making development work on the device easier by providing access to the filesystem and command-line tools.[14][15]

Many Chinese iOS device owners also jailbreak their phones to install third-party Chinese character input systems because they are easier to use than Apple's.[16]

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.[17] Software-based unlocks have been available since September 2007,[18] with each tool applying to a specific iPhone model and baseband version (or multiple models and versions).[19] This includes the iPhone 4, iPhone 3GS, and iPhone 3G models.

Installation of malware

Computer criminals may jailbreak an iPhone to install malware, or target jailbroken iPhones on which malware can be installed more easily. The Italian cybersecurity company Hacking Team, which sells hacking software to law enforcement agencies, advised police to jailbreak iPhones to allow tracking software to be installed on them.[20][21]

Software piracy

On iPhones the installation of consumer software is generally restricted to installation through the App Store. Jailbreaking therefore allows the installation of pirated applications.[22] It has been suggested that a major motivation for Apple to prevent jailbreaking is to protect the income of its App Store, including third-party developers and allow the buildup of a sustainable market for third-party software.[23]

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 – thus enabling the user to boot without the need to use a computer.[24] These jailbreaks are harder to make and take a lot of reverse engineering and years of experience.

With a "tethered" jailbreak, a computer is needed to turn the device 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.[25] With a tethered jailbreak, you can still restart SpringBoard ("respring") on the device without needing to reboot.

There is also "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 such as making phone calls, or texting.[26] 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).

Comparison to Android rooting

Jailbreaking of iOS devices has sometimes been compared to "rooting" of Android devices. Although both concepts involve privilege escalation, they differ in scope. Some Android devices allow users to modify or replace the operating system after unlocking the bootloader;[citation needed] enabling installation of apps that have not been reviewed or authorized by a central authority such as Google—known as "sideloading"—is a simple user preference.[27]

iOS is engineered with security measures including a "locked bootloader" to prevent users from modifying the operating system, and to prevent apps from gaining root privileges; jailbreaking an iOS device to defeat all security measures presents a significant technical challenge. It violates Apple's end-user license agreement for iOS.[28] Until 2015 sideloading apps in general was difficult for most individual users, requiring them to purchase developer membership, while corporations could install private applications onto corporate phones.[citation needed] After 2015, this became free for all users, but apps installed this way have the restrictions of all other apps.

Security, privacy, and stability

The first iPhone worm, iKee, appeared in early November 2009, created by a 21-year-old Australian student in 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 insecure state.[29] 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.[30][31] In 2010 blogger John Gruber, who is close to Apple, said that users misunderstood some jailbreak exploits and that they were more serious than they appear. He commented that "it's odd how the press is mostly covering this as 'jailbreaking now more convenient' rather than 'remote code exploit now in the wild'", pointing out that the exploit allowed the creator of a malicious website to take control of iPhones accessing it.[32]

Restoring a device with iTunes can remove a jailbreak.[33][34][35]

In 2012, Forbes staff analyzed a UCSB study on 1407 free programs available from Apple and a third party source. Of the 1,407 free apps investigated, 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 App Store leaked none. Unauthorized apps tended to respect privacy better than official ones.[36] Also, there is a program called PrivaCy that allows user to control the upload of usage statistics to remote servers.[36]

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).[37][38][39] However, even apps from the App Store are known to cause battery issues whilst running in the background.[40]

In August 2015 the KeyRaider malware was discovered that affects only jailbroken iPhones.[41]

History of exploit-disabling patch releases

Apple has released various updates to iOS that patch exploits used by jailbreak utilities; this includes a patch released in iOS 6.1.3 to software exploits used by the original evasi0n iOS 6–6.1.2 jailbreak, in iOS 7.1 patching the Evasi0n 7 jailbreak for iOS 7–7.0.6-7.1 beta 3. Bootrom exploits (exploits found in the hardware of the device) cannot be patched by Apple system updates, but can be fixed in hardware revisions such as new chips or new hardware in its entirety, as occurred with the iPhone 3GS in 2009.[42]

On July 15, 2011, Apple released a new iOS version that closed the exploit used in JailbreakMe 3.0. The German Federal Office for Information Security had reported that JailbreakMe uncovered the "critical weakness" that information could be stolen or unwillingly downloaded malware by iOS users clicking on maliciously crafted PDF files.[43] Before Apple released a fix for this security hole, jailbreak users had access to a fix published by the developer of JailbreakMe.[citation needed]

In Q3 2014 Apple released iOS 8.1.3 that patched up the exploits used in jailbreak for iOS 8.0-8.1.2. It was not possible to jailbreak until the iOS 8.3 update. The iOS 9.1 update on October 21, 2015, included a patch for the Pangu iOS 9.0-9.0.2 Jailbreak.[44]

At the Apple Worldwide Developers Conference (WWDC) June 2015, Apple announced that iOS 9 will feature a new 'rootless' security system, making it more difficult to replace system files. [citation needed]

On August 13, 2015, Apple updated iOS to 8.4.1, patching the TaiG exploit. Pangu and Taig teams both said they were working on exploiting iOS 8.4.1, and Pangu demonstrated these chances at the WWDC 2015.[45]

On September 16, 2015, iOS 9 was announced and made available, has made rapid growth install base [clarification needed] from iOS 8; it was released with a new "Rootless" security system, dubbed a "heavy blow" to the jailbreaking community.[46]

On October 21, 2015, seven days after the Pangu iOS 9.0-9.0.2 Jailbreak release, Apple pushed the iOS 9.1 update, which contained a patch that rendered it nonfunctional.[44]

The legal status of jailbreaking 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,[47] but member states vary on the implementation of the directive.

While Apple technically does not support jailbreaking as a violation of its EULA, jailbreaking communities have generally not been legally threatened by Apple. At least two prominent jailbreakers have been given positions at Apple, albeit in at least one case a temporary one.[48][49] Apple has also regularly (though possibly somewhat jokingly) thanked jailbreak communities for detecting security holes in iOS release notes.[50]

Australia

In 2010, Electronic Frontiers Australia said that it is unclear whether jailbreaking is legal in Australia, and that anti-circumvention laws may apply.[51] These laws had been strengthened by the Copyright Amendment Act 2006.

Canada

In November 2012, Canada amended its Copyright Act with new provisions prohibiting tampering with digital locks, with exceptions including software interoperability.[52] 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,[53] 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.[54]

India

India's copyright law permits circumventing DRM for non-copyright-infringing purposes.[55][56] Parliament introduced a bill including this DRM provision in 2010 and passed it in 2012 as Copyright (Amendment) Bill 2012.[57] 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.[55][56]

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.[58][59] This law was added to the Copyright Act 1994 as part of the Copyright (New Technologies) Amendment Act 2008.

Singapore

Jailbreaking might be legal in Singapore if done to provide interoperability and not circumvent copyright, but that has not been tested in court.[60]

United Kingdom

The law Copyright and Related Rights Regulations 2003 makes circumventing DRM protection measures legal for the purpose of interoperability but not copyright infringement. Jailbreaking may be a form of circumvention covered by that law, but this has not been tested in court.[47][61] Competition laws may also be relevant.[62]

United States

The main law that affects the legality of iOS jailbreaking in the United States is the 2012 Digital Millennium Copyright Act (DMCA), which says "no person shall circumvent a technological measure that effectively controls access to a work protected under" the DMCA, since this may apply to jailbreaking.[63] Every three years, the law allows the public to propose exemptions for legitimate reasons for circumvention, which last three years if approved. In 2010 and 2012, the U.S. Copyright Office approved exemptions that allowed smartphone users to jailbreak their devices legally,[64] and in 2015 the Copyright Office approved an expanded exemption that also covers other all-purpose mobile computing devices, such as tablets.[65] It is still possible Apple may employ technical countermeasures to prevent jailbreaking or prevent jailbroken phones from functioning.[66] It is unclear whether it is legal to traffic in the tools used to make jailbreaking easy.[66]

In 2010 Apple announced that jailbreaking "can violate the warranty".[67] This may be affected by the Magnuson-Moss Warranty Act of 1975.

In 2007 Tim Wu, a professor at Columbia Law School, argued that jailbreaking "Apple's superphone is legal, ethical, and just plain fun."[68] Wu cited an explicit exemption issued by the Library of Congress in 2006 for personal carrier 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.[69] Wu did not claim that this exemption applies to those who help others unlock a device or "traffic" in software to do so.[68]

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.[70][71] 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.

On October 28, 2012, the US Copyright Office released a new exemption ruling. The jailbreaking of smartphones continued to be legal "where circumvention is accomplished for the sole purpose of enabling interoperability of [lawfully obtained software] applications with computer programs on the telephone handset." However, the U.S. Copyright office refused to extend this exemption to tablets, such as iPads, arguing that the term "tablets" is broad and ill-defined, and an exemption to this class of devices could have unintended side effects.[72][73][74] 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 26, 2013.[73]

History of tools

Several people (including saurik, p0sixninja, and geohot) who have contributed to building jailbreaking tools such as AppSnapp, greenpois0n, Absinthe, purplera1n, blackra1n, limera1n, and others. August 2011 at DEF CON.

A few days after the original iPhone became available in July 2007, developers released the first jailbreaking tool for it,[75] and soon a jailbreak-only game app became available.[76] In October 2007, JailbreakMe 1.0 (also called "AppSnapp") allowed people to jailbreak iPhone iOS 1.1.1 on both the iPhone and iPod touch,[77][78] 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 iPhone OS 1.1.4.[79]

The iPhone Dev Team which is not affiliated with Apple, has released a series of free desktop-based jailbreaking tools. In July 2008 it released a version of PwnageTool to jailbreak the then new iPhone 3G on iPhone OS 2.0 as well as the iPod touch,[80][81] newly including Cydia as the primary third-party installer for jailbroken software.[82] PwnageTool continues to be updated for untethered jailbreaks of newer iOS versions.[83][84]

In November 2008 the iPhone Dev Team released QuickPWN to jailbreak iPhone OS 2.2 on iPhone and iPod touch, with options to enable past functionality that Apple had disabled on certain devices.[85]

After Apple released iOS 3.0 in June 2009, the Dev Team published redsn0w as a simple jailbreaking tool for Mac and Windows, and also updated PwnageTool primarily intended for expert users making custom firmware, and only for Mac.[86] It continues to maintain redsn0w for jailbreaking most versions of iOS 4 and iOS 5 on most devices.[87]

George Hotz developed the first iPhone unlock. In 2009, he released a jailbreaking tool for the iPhone 3GS on iPhone OS 3.0 called purplera1n,[88] and blackra1n for iPhone OS version 3.1.2 on the 3rd generation iPod touch and other devices.[89]

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.[90]

Nicholas Allegra (better known as "comex") released a program called Spirit in May 2010.[citation needed] Spirit jailbreaks devices including iPhones running iPhone OS 3.1.2, 3.1.3, and iPad running iOS 3.2[91] In August 2010, comex released JailbreakMe 2.0, the first a web-based tool to jailbreak the iPhone 4 (on iOS 4.0.1).[92][93] In July 2011, he released JailbreakMe 3.0,[94] 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).[95]

In 2011, JailbreakMe 3.0 used a flaw in PDF file rendering in mobile Safari.[96][97]

Chronic Dev Team initially released greenpois0n in October 2010, a desktop-based tool for jailbreaking iOS 4.1[98] and later iOS 4.2.1[99] on most devices including the Apple TV,[100] as well as iOS 4.2.6 on CDMA (Verizon) iPhones.[101]

As of December 2011, redsn0w included the "Corona" untether by pod2g for iOS 5.0.1 for iPhone 3GS, iPhone 4, iPad (1st generation), and iPod touch (3rd and 4th generation).[84] 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.[102]

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.[24][25][103][104] 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 jailbreaking the third-generation iPad for the first time.[105] The hackers together called the evad3rs released an iOS 6.X jailbreak tool called "evasi0n" available for Linux, OS X, and Windows on Monday, February 4, 2013 at noon Eastern Standard Time.[citation needed] Due to the high volume of interest in downloading the jailbreak utility, the site initially gave anticipating users download errors.[citation needed] When Apple upgraded its software to iOS 6.1.3 it permanently patched out the evasi0n jailbreak. Apple has now[when?] upgraded its software to iOS 6.1.4.[106] which is only available for the iPhone 5. In April 2013, the latest versions of Sn0wbreeze was released, which added the support for tethered jailbreaking on A4 devices (i.e. devices not newer than the iPhone 4, iPad (1st generation), or iPod touch (4th generation)).[107][108][109]

On December 22, 2013, the evad3rs released a new version of evasi0n that supports jailbreaking iOS 7.0.x, known as evasi0n7.[citation needed] On December 30, 2013, winocm, ih8sn0w and SquiffyPwn released p0sixspwn for untethering devices on iOS 6.1.3 - 6.1.5. Initially, it was necessary to jailbreak tethered using redsn0w and install p0sixpwn at Cydia. A few days later, on January 4, 2014, the same team released a version of p0sixpwn for jailbreaking using a computer.[citation needed]

iOS 7.1 patched the exploits used by evasi0n7, and on June 23, 2014, Pangu, a Chinese untethered jailbreak was released for iOS 7.1.[citation needed]

On October 22, 2014, Pangu Team released Pangu8 to jailbreak all devices running iOS 8-8.1. The first versions did not bundle Cydia, nor was there an iOS 8 compatible version of Cydia at the time.[citation needed]

On November 29, 2014, TaiG team released their jailbreak tool called "TaiG" for devices running iOS 8.0-8.1.1. On December 10, 2014, the app was updated to include support for iOS 8.1.2.[110] On July 3, 2015, TaiG 2.3.0 was released, which includes support for iOS 8.0-8.4.[111]

On 10 September 2015, 6 days before iOS 9 was released, iH8sn0w had demonstrated a working exploit on his Twitter page, linking to a YouTube video.[112]

On October 14, 2015, Pangu Team released Pangu 9, their jailbreak tool for iOS 9.[113][114][115]

Table of jailbreaks by device and iOS version, 2007-present

  Device   OS   Both

Device/OS Release date Tool Developer(s) Time (days) until first jailbreak
Date of first jailbreak
iPhone / iPhone OS 1.0 June 29, 2007 (no name) iPhone Dev Team[116] July 10, 2007[75] 11
iPod touch September 5, 2007 (no name) niacin and dre October 10, 2007[117][118] 35
iPhone 3G / iPhone OS 2.0 July 11, 2008 PwnageTool iPhone Dev Team July 20, 2008[81] 9
iPod touch (2nd generation) September 9, 2008 redsn0w iPhone Dev Team and Chronic Dev Team January 30, 2009[119][120] 143
iPhone OS 3.0 June 17, 2009 PwnageTool iPhone Dev Team June 19, 2009[121] 2
iPhone 3GS June 19, 2009 purplera1n George Hotz July 3, 2009[122] 14
iPad April 30, 2010 Spirit comex May 3, 2010[91] 3
iOS 4.0 June 21, 2010 PwnageTool iPhone Dev Team June 23, 2010[123][124] 2
iPhone 4 June 24, 2010 JailbreakMe 2.0 comex August 1, 2010[92] 38
Apple TV (2nd generation) September 1, 2010 PwnageTool iPhone Dev Team October 20, 2010[125] 49
iPad 2 March 11, 2011 JailbreakMe 3.0 comex July 5, 2011[95] 116
iOS 5.0 October 12, 2011 redsn0w iPhone Dev Team October 13, 2011[87] 1
iPhone 4S October 14, 2011 Absinthe pod2g, Chronic Dev Team, iPhone Dev Team January 20, 2012[24][25] 98
Apple TV (3rd generation) March 7, 2012 - - - -
iPad (3rd generation) March 16, 2012 Absinthe 2.0 pod2g, Chronic Dev Team, iPhone Dev Team May 25, 2012 70
iOS 6.0 September 19, 2012 redsn0w iPhone Dev Team September 19, 2012 0
iPhone 5 September 21, 2012 evasi0n evad3rs February 4, 2013 136
iPod touch (5th generation) October 23, 2012 evasi0n evad3rs February 4, 2013 104
iPad (4th generation) November 2, 2012 evasi0n evad3rs February 4, 2013 94
iPad Mini November 2, 2012 evasi0n evad3rs February 4, 2013 94
iOS 7 September 18, 2013 evasi0n7 evad3rs December 22, 2013 95
iPhone 5C September 20, 2013 evasi0n7 evad3rs December 22, 2013 93
iPhone 5S September 20, 2013 evasi0n7 evad3rs December 22, 2013 93
iPad Air November 1, 2013 evasi0n7 evad3rs December 22, 2013 51
iPad Mini 2 November 12, 2013 evasi0n7 evad3rs December 22, 2013 40
iOS 7.1－7.1.2 May 29, 2014 Pangu Pangu Team June 23, 2014 25
iOS 8 September 17, 2014 Pangu8 Pangu Team October 22, 2014 35
iPhone 6 September 19, 2014 Pangu8 Pangu Team October 22, 2014 33
iPhone 6 Plus September 19, 2014 Pangu8 Pangu Team October 22, 2014 33
iPad Air 2 October 22, 2014 Pangu8 Pangu Team October 22, 2014 0
iPad Mini 3 October 22, 2014 Pangu8 Pangu Team October 22, 2014 0
iOS 8.1.1－8.4 November 17, 2014 TaiG, PP Jailbreak TaiG, PP Jailbreak November 29, 2014 12
Apple Watch April 24, 2015 - - - -
iPod touch (6th generation) July 15, 2015 TaiG, PP Jailbreak TaiG, PP Jailbreak July 16, 2015 1
iOS 9 September 16, 2015 Pangu9 Pangu Team October 14, 2015 28
iPhone 6S September 25, 2015 Pangu9 Pangu Team October 14, 2015 19
iPhone 6S Plus September 25, 2015 Pangu9 Pangu Team October 14, 2015 19
iPad Mini 4 September 9, 2015 Pangu9 Pangu Team October 14, 2015 35
Apple TV (4th generation) October 30, 2015 - - - -
iPad Pro November 11, 2015 - - - -

Table of jailbreaking tool releases 2011-present

Name Release Date Hardware Firmware Untethered? Developer(s)
JailbreakMe 3.0[126] July 5, 2011[126] [126]
iPad family:
iPhone family:
4.2.6 – 4.2.8
4.3 – 4.3.3[126][notes 1] 		Yes[126] comex[126]
Seas0npass[127] October 18, 2011[127] [127]
Apple TV family:
4.3 – 5.3
6.2.1 (tethered)[127] 		Yes[127]
redsn0w 0.9.15 beta 3[128][129] November 1, 2012 [84][128][130]
iPad family:
iPhone family:
iPod family:
4.1 – 6.1.6 iPhone Dev Team[84]
Absinthe 2.0.4[103] May 30, 2012 [104]
iPad family:
iPhone family:
iPod family:
5.1.1[104] Yes[24] pod2g, Chronic Dev Team, iPhone Dev Team[103]
evasi0n February 4, 2013
iPad family:
iPhone family:
iPod family:
6.0 – 6.1.2[133] Yes pod2g, MuscleNerd, pimskeks, and planetbeing (evad3rs)
evasi0n7 December 22, 2013
iPad family:
iPhone family:
iPod family:
7.0 – 7.0.6[133] Yes pod2g, MuscleNerd, pimskeks, and planetbeing (evad3rs)
p0sixspwn December 30, 2013
iPad family:
iPhone family:
iPod family:
6.1.3 – 6.1.6 Yes winocm, iH8sn0w, and SquiffyPwn
Pangu June 23, 2014[134] [134]
iPad family:
iPhone family:
iPod family:
7.1 – 7.1.2 Yes dm557, windknown, ogc557, and Daniel_K4 (@PanguTeam)
Pangu8 October 22, 2014
iPad family:
iPhone family:
iPod family:
8.0 – 8.1 Yes windknown, ogc557, Daniel_K4, zengbanxian, INT80 (@PanguTeam)
TaiG November 29, 2014
iPad family:
iPhone family:
iPod family:
8.0 – 8.4 Yes TaiG
PPJailbreak January 18, 2015
iPad family:
iPhone family:
iPod family:
8.0 – 8.4 Yes PPJailbreak
Pangu9 October 14, 2015
iPad family:
iPhone family:
iPod family:
9.0 – 9.0.2 Yes PanguTeam
? January 1, 2016
iPad family:
iPhone family:
iPod family:
9.1 – 9.2 No ?


See also

Notes

  1. ^ 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.

References

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