In this case booting a custom kernel or a modified recovery image is not allowed, but you can still modify the system partition. Some locked boot loaders only enforce signature verification on selected partitions a typical example is having locked boot and recovery partitions. Signature checking can happen at boot time, at flashing time, or both. Sometimes signature checks on the same device are enforced differently when using fastboot instead of the manufacturer’s proprietary download mode. Sometimes, fastboot access is forbidden but you can still flash using the manufacturer’s proprietary flashing protocol, such as Motorola SBF or Samsung ODIN. When the boot loader is locked, and the manufacturer doesn’t provide a legitimate method to unlock it, you usually need to find a flaw in the device that will serve as an entry point for rooting it.įirst you need to identify which type of boot loader lock you have it can vary depending on the manufacturer, carrier, device variant, or software version within the same device. This article states that it's possible to root with a locked bootloader. LG made sure that the bootloader can't be unlocked. My LG Stylo 2 Sprint Version running on Android 7 Nougat has a locked bootloader.
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