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IPSW is a file format used to install iOS, iPadOS, tvOS, HomePod, watchOS, and most recently, macOS firmware for devices equipped with Apple silicon. [3] All Apple devices share the same IPSW file format for iOS firmware and their derivatives, allowing users to flash their devices through Finder or iTunes on macOS or Windows, respectively.
SHSH blobs are created by a hashing formula that has multiple keys, including the device type, the iOS version being signed, and the device's ECID. [5] [non-primary source needed] When Apple wishes to restrict users' ability to restore their devices to a particular iOS version, Apple can refuse to generate this hash during the restore attempt, and the restore will not be successful (or at ...
iPhone OS 2 is the second major release of the iOS mobile operating system developed by Apple Inc., being the successor to iPhone OS 1. It was the first version of iOS to support third-party applications via the App Store. iPhone OS 2.2.1 is the final version of iPhone OS 2. It was succeeded by iPhone OS 3 on June 17, 2009.
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, [41] [42] newly including Cydia as the primary third-party installer for jailbroken software. [43]
iPhone OS 2 [note 2] Early 2008 June 2008 iPhone OS 3 [note 2] Early 2009 June 2009 iOS 4 [note 2] Early 2010 June 2010 Continuing from iPhone OS 3; iOS 5: June 6, 2011 October 12, 2011 iOS 6: June 11, 2012 September 19, 2012 iOS 7: June 10, 2013 September 18, 2013 First version of iOS to bring 64-bit hardware and software support; iOS 8: June ...
On smartphones, tablets, and other devices, an over-the-air update is a firmware or operating system update that is downloaded by the device over the internet. Previously, users had to connect these devices to a computer over USB to perform an update. These updates may add features, patch security vulnerabilities, or fix software bugs.
Apple has modified the C compiler toolchain that is used to build iBoot in order to advance memory safety since iOS 14.This advancement is designed to mitigate entire classes of common memory corruption vulnerabilities such as buffer overflows, heap exploitations, type confusion vulnerabilities, and use-after-free attacks.
Custom firmware may still be available for certain products, which is often free and open-source software, and is especially popular in certain segments of hardware like gaming consoles, wireless routers and Android phones, which are capable of running complete general-purpose operating systems like Linux, FreeBSD or NetBSD, which are often the systems used by the manufacturer in their ...