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An unlocked bootloader, showing additional available options. Bootloader unlocking is the process of disabling the bootloader security that makes secure boot possible. It can make advanced customizations possible, such as installing custom firmware.
iOS jailbreaking is the use of a privilege escalation exploit to remove software restrictions imposed by Apple on devices running iOS and iOS-based [a] operating systems. It is typically done through a series of kernel patches.
Linux dual-booting is achieved by partitioning the boot drive, installing the Yaboot bootloader onto the Linux partition, and selecting that Linux partition as the Startup Disk. This results in users being prompted to select whether they want to boot into Mac OS or Linux when the machine starts.
Updated with information about AT&T plans. As we posted earlier, Apple is selling an unlocked version of the iPhone in the US starting at US$649. To help clarify questions about this development ...
The U.S. government ordered Apple to produce an IPSW file that would allow investigators to brute force the passcode of the iPhone. [7] The order used the All Writs Act , originally created by the Judiciary Act of 1789 , to demand the firmware, in the same way as other smartphone manufacturers have been ordered to comply.
[5] [6] [7] If iBoot fails to load or fails to verify iOS, iPadOS or macOS, the bootloader jumps to DFU (Device Firmware Update) [8] mode; otherwise it loads the remaining kernel modules. [2] [9] Once the kernel and all drivers necessary for booting are loaded, the boot loader starts the kernel’s initialization procedure.
iOS 7 introduced a complete visual overhaul of the user interface. With "sharper, flatter icons, slimmer fonts, a new slide-to-unlock function, and a new control panel that slides up from the bottom of the screen for frequently accessed settings," the operating system also significantly redesigned the standard pre-installed apps from Apple. [4]
When a system on a chip (SoC) enters suspend to RAM mode, in many cases, the processor is completely off while the RAM is put in self refresh mode. At resume, the boot ROM is executed again and many boot ROMs are able to detect that the SoC was in suspend to RAM and can resume by jumping directly to the kernel which then takes care of powering on again the peripherals which were off and ...