Difference between revisions of "Failbreak"

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The term "'''failbreak'''" mainly refers to an incomplete or otherwise flawed jailbreak that cannot run [[Mobile Substrate]] properly. Some failbreaks cannot be released to the public for various reasons, so "failbreak" is also sometimes used to refer to any jailbreak that cannot be released to the public, whether or not that jailbreak is complete. Sometimes people also call [[Scam Sites|fake jailbreaks]] "failbreaks". Since this word has multiple meanings, it's confusing to try to use it in conversation, so it's best to avoid it.
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The term "'''failbreak'''" is used to mean one or both of two things: an incomplete or otherwise flawed jailbreak that cannot run [[Cydia Substrate]] properly, or a jailbreak that cannot be released to the public for some reason (whether or not that jailbreak is complete). Some "failbreaks" are both incomplete and cannot be released to the public. Sometimes people also call [[Scam Sites|fake jailbreaks]] "failbreaks". Since this word has multiple possible meanings, it's confusing to try to use it in conversation, so it's best to avoid it.
   
 
saurik has said that "the term was actually first used years ago by chpwn on a released jailbreak as there was something wrong with it that caused Substrate to only work in some processes; I was then later using it with regards to jailbreaks where the kernel patches didn't support the various memory protection changes required by C Substrate. I provide a tool called 'vmcheck' that people developing jailbreaks use to 'unit test' their patches, and when it fails... well, that's a 'failbreak'."<ref>http://www.reddit.com/r/jailbreak/comments/12kx0q/chpwn_and_phoenixdev_already_have_a_failbreak_for/c6w4zk7</ref>
 
saurik has said that "the term was actually first used years ago by chpwn on a released jailbreak as there was something wrong with it that caused Substrate to only work in some processes; I was then later using it with regards to jailbreaks where the kernel patches didn't support the various memory protection changes required by C Substrate. I provide a tool called 'vmcheck' that people developing jailbreaks use to 'unit test' their patches, and when it fails... well, that's a 'failbreak'."<ref>http://www.reddit.com/r/jailbreak/comments/12kx0q/chpwn_and_phoenixdev_already_have_a_failbreak_for/c6w4zk7</ref>
   
[[User:chpwn|chpwn]] showed a screenshot of his new [[iPhone 5]] running [[Cydia.app|Cydia]] shortly after its launch on [[Timeline|September 19, 2012]]<ref>https://twitter.com/chpwn/status/249249128926806016</ref>. Shortly afterward, usage of this term picked up, and on October 19, 2012, [[User:Planetbeing|planetbeing]] tweeted that he upgraded the "failbreak" with a [[exploit|kernel exploit]] so that tweaks actually work on the [[iPhone 5]], to make it "almost a full tethered jailbreak."<ref>https://twitter.com/planetbeing/status/259059248795881472</ref>. [[User:chpwn|chpwn]] [https://twitter.com/chpwn/status/252166757643583489 explained a failbreak on Twitter].
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This term came up again when [[User:chpwn|chpwn]] showed a screenshot of his new [[iPhone 5]] running [[Cydia.app|Cydia]] shortly after its launch on [[Timeline#September_10|{{date|2012|09|19}}]]<ref>https://twitter.com/chpwn/status/249249128926806016</ref>. He [https://twitter.com/chpwn/status/252166757643583489 explained this] as "the “failbreak” is for jailbreak developers (e.g. @iphone_dev, @chronicdevteam, etc)." On {{date|2012|10|19}}, [[User:Planetbeing|planetbeing]] tweeted that he upgraded the "failbreak" with a [[exploit|kernel exploit]] so that tweaks actually work on the [[iPhone 5]], to make it "almost a full tethered jailbreak."<ref>https://twitter.com/planetbeing/status/259059248795881472</ref>
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In {{date|2015|03}}, [https://twitter.com/chpwn/status/577801639169560576 chpwn said] "I open sourced the code for the old ‘failbreak’ from around iOS 6.0. (The exploits involved are all fixed now.) http://github.com/grp/amfi_interpose"
   
 
== Failbreaks ==
 
== Failbreaks ==
 
* iOS 4.2.1 ([[Jailbreak Monte]])
 
* iOS 4.2.1 ([[Jailbreak Monte]])
** Access to iOS 4.2b3 beta for device
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** Access to iOS 4.2 beta 3 for device
 
* iOS 6.x on [[S5L8940|A5]], [[S5L8942|A5 Rev A]] [[S5L8942|A5X]], [[S5L8950|A6]] and [[S5L8955|A6X]]
 
* iOS 6.x on [[S5L8940|A5]], [[S5L8942|A5 Rev A]] [[S5L8942|A5X]], [[S5L8950|A6]] and [[S5L8955|A6X]]
 
** [[Apple Developer]] account required
 
** [[Apple Developer]] account required
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== References ==
 
== References ==
 
<references/>
 
<references/>
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[[Category:Jailbreaking]]

Latest revision as of 12:47, 17 September 2021

The term "failbreak" is used to mean one or both of two things: an incomplete or otherwise flawed jailbreak that cannot run Cydia Substrate properly, or a jailbreak that cannot be released to the public for some reason (whether or not that jailbreak is complete). Some "failbreaks" are both incomplete and cannot be released to the public. Sometimes people also call fake jailbreaks "failbreaks". Since this word has multiple possible meanings, it's confusing to try to use it in conversation, so it's best to avoid it.

saurik has said that "the term was actually first used years ago by chpwn on a released jailbreak as there was something wrong with it that caused Substrate to only work in some processes; I was then later using it with regards to jailbreaks where the kernel patches didn't support the various memory protection changes required by C Substrate. I provide a tool called 'vmcheck' that people developing jailbreaks use to 'unit test' their patches, and when it fails... well, that's a 'failbreak'."[1]

This term came up again when chpwn showed a screenshot of his new iPhone 5 running Cydia shortly after its launch on 19 September 2012[2]. He explained this as "the “failbreak” is for jailbreak developers (e.g. @iphone_dev, @chronicdevteam, etc)." On 19 October 2012, planetbeing tweeted that he upgraded the "failbreak" with a kernel exploit so that tweaks actually work on the iPhone 5, to make it "almost a full tethered jailbreak."[3]

In March 2015, chpwn said "I open sourced the code for the old ‘failbreak’ from around iOS 6.0. (The exploits involved are all fixed now.) http://github.com/grp/amfi_interpose"

Failbreaks

References