Blackra1n - AbsoluteAstronomy.com

blackra1n is a program that jailbreaks versions 3.1, 3.1.1 and 3.1.2 of Apple's operating system

Operating system

An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...

for iDevice

IDevice

iDevice in its widest sense, is an unofficial general term that can refer to any mobile electronic devices marketed by Apple Inc. that start with "i" or more specifically any mobile devices that use the iOS operating system, which includes:* iPad* iPhone...

s, known as iOS.

The program uses a bug in the USB code of the firmware

Firmware

In electronic systems and computing, firmware is a term often used to denote the fixed, usually rather small, programs and/or data structures that internally control various electronic devices...

for iDevice

IDevice

s, allowing unsigned code

Code signing

Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee that the code has not been altered or corrupted since it was signed by use of a cryptographic hash....

to be executed. Blackra1n uses this exploit

Exploit (computer security)

An exploit is a piece of software, a chunk of data, or sequence of commands that takes advantage of a bug, glitch or vulnerability in order to cause unintended or unanticipated behavior to occur on computer software, hardware, or something electronic...

to patch the firmware of the iDevice whilst in DFU (Device Firmware Upgrade) mode. This mode is used when upgrading to a firmware through iTunes, but also can be activated by the user. The program allows users to install Cydia, Icy

Icy (application)

Icy is a package installer/manager for jailbroken iPhone and iPod Touch, originally created and maintained by Ripdev, which allows users to browse and download applications from a range of sources. Most applications are available to download for free, with some requiring purchase after downloading,...

(removed in blackra1n RC3), and Rock. These applications allow the user to access tweaks, homebrew

Homebrew (video games)

Homebrew is a term frequently applied to video games or other software produced by consumers to target proprietary hardware platforms not typically user-programmable or that use proprietary storage methods...

applications, the root directory

Root directory

In computer file systems, the root directory is the first or top-most directory in a hierarchy. It can be likened to the root of a tree — the starting point where all branches originate.-Metaphor:...

and the file system

File system

A file system is a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve and update data, as well as manage the available space on the device which contain it. A file system organizes data in an efficient manner and is tuned to the...

of the iDevice. Blackra1n can also perform tethered jailbreaks on the iPod Touch 3G and the iPhone 3GS, if the devices are running OS 3.1.2. When iOS 3.1.3 was released, SpiritJB

Spirit (iOS jailbreak)

Spirit is an untethered jailbreak for iPhone, iPod Touch, and iPad running iOS 3.1.2 through 3.2. It was developed by Wii homebrew developer comex. Spirit allows users to install software not approved by Apple on their iDevices. It is available for the Windows, Linux, and Mac platforms...

had come out, and was untethered for both 3.1.2 and 3.1.3.

Blackra1n has been superseded by Spirit

Spirit (iOS jailbreak)

by Comex.

Releases

Version	Release Date	Notes
RC1	October 11, 2009	Initial release. Supports iPhone OS IPhone OS iOS is Apple's mobile operating system. Originally developed for the iPhone, it has since been extended to support other Apple, Inc. devices such as the iPod Touch, iPad, and Apple TV. Apple, Inc. does not license iOS for installation on third-party hardware... version 3.1.2 on all models of iPhone IPhone The iPhone is a line of Internet and multimedia-enabled smartphones marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007... and iPod touch IPod touch The iPod Touch is a portable media player, personal digital assistant, handheld game console, and Wi-Fi mobile device designed and marketed by Apple Inc. The iPod Touch adds the multi-touch graphical user interface to the iPod line... .
RC2	October 25, 2009	Fixed iPhone 3G IPhone 3G The iPhone 3G is the second generation of iPhone designed and marketed by Apple Inc.. It was the successor to the original iPhone, and is succeeded by the iPhone 3GS. Introduced on June 9, 2008 at the WWDC 2008 at the Moscone Center, San Francisco... issues. Tethered 3.1 jailbreak for iPod touch IPod touch The iPod Touch is a portable media player, personal digital assistant, handheld game console, and Wi-Fi mobile device designed and marketed by Apple Inc. The iPod Touch adds the multi-touch graphical user interface to the iPod line... 2G and iPhone 3GS IPhone 3GS -Camera:The iPhone 3GS features an improved 3 megapixel camera manufactured by OmniVision. In addition to the higher megapixel count, it also features auto-focus, auto white balance and auto macro and is capable of capturing VGA video... with updated bootrom. Fixed Icy issues.
RC3	November 3, 2009	Includes blacksn0w. Icy no longer included. Hacktivates iPhones

Releases

External links

See also