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Unlocking the bootloader may lead to data loss on Android and ChromeOS devices, as some data is impossible to back up without root permission. This will also lead to certain security apps not working, such as Samsung Knox for which the counter would be stuck at "0x1."
Some manufacturers, including Xiaomi, OnePlus, and Motorola, provide official support for unlocking the bootloader, allowing for rooting without exploiting a vulnerability. [46] However, the support may be limited only to certain phones – for example, LG released its bootloader unlock tool only for certain models of its phones. [47]
The *** is a device specific unlock key. flashing lock/oem lock *** – locks an OEM unlocked bootloader. erase – erases a specific partition. reboot – reboots the device into either the main operating system, the system recovery partition or back into its boot loader.
To prevent users from cheating in video games, engaging in illegal activities, or other violations after obtaining root access to their phones, and to avoid some users attributing to Xiaomi bugs that, due to modifying the system, Xiaomi has gradually restricted the ability to unlock the bootloader on phones sold in mainland China since the ...
An unlocked bootloader gives developers the ability to load a custom operating system onto the phone without the need to use alternative bypasses such as Safestrap, it also provides easy root access [19] without the need to use specific root exploits such as the Verizon variant (XT912) and the international variant (XT910). [20]
CalyxOS preserves the Android security model, using Android's Verified Boot system of cryptographic signing of the operating system, and running with a locked bootloader. [ 3 ] [ 4 ] CalyxOS also features an installer that guides the user through the process of unlocking and then re-locking the bootloader.
Users are able to gain root privileges on the device by first unlocking its bootloader using the fastboot command fastboot oem unlock [63] and flashing a package that adds the functionality to the system or by uploading specially crafted data packages via the adb program [64] without the need to unlock the bootloader. Unlocking the bootloader ...
Custom firmware, also known as aftermarket firmware, is an unofficial new or modified version of firmware created by third parties on devices such as video game consoles, mobile phones, and various embedded device types to provide new features or to unlock hidden functionality.