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The bootloaders of Nexus and Pixel devices can be unlocked by using the fastboot command fastboot oem unlock or if it doesn't recognize the command fastboot flashing unlock. [ 9 ] When Motorola released a bootloader unlocking tool for the Droid Razr, Verizon removed the tool from their models.
Screenshot of Device Manager, containing a Qualcomm device booted in the Emergency Download Mode. The Qualcomm Emergency Download mode, commonly known as Qualcomm EDL mode and officially known as Qualcomm HS-USB QD-Loader 9008 [1] is a feature implemented in the boot ROM of a system on a chip by Qualcomm which can be used to recover bricked smartphones.
Fastboot is a communication protocol used primarily with Android devices. [1] It is implemented in a command-line interface tool of the same name and as a mode of the bootloader of Android devices. The tool is included with the Android SDK package and used primarily to modify the flash filesystem via a USB connection from a host computer.
The Android Bootloader (Aboot or ABL), which implements the fastboot interface. Android Bootloader verifies the authenticity of the boot and recovery partitions. [4] By pressing a specific key combination, devices can also boot in recovery mode. Android Bootloader then transfers control to the Linux kernel.
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.
Typical POST screen (AMI BIOS) Typical UEFI-compliant BIOS POST screen (Phoenix Technologies BIOS) Summary screen after POST and before booting an operating system (AMI BIOS) A power-on self-test ( POST ) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on.
A bricked device may not power on at all, or it may power on, but never boot to the OS or firmware, the closest getting to a warning screen. Some kernel bugs [ ambiguous ] have been known that affect the /data partition in the eMMC chip, which becomes corrupted during certain operations such as wiping and flashing.
On the high end System/360 models, most [nb 4] System/370 and some later systems, the functions of the switches and the LOAD button are simulated using selectable areas on the screen of a graphics console, often [nb 5] an IBM 2250-like device or an IBM 3270-like device. For example, on the System/370 Model 158, the keyboard sequence 0-7-X (zero ...