To run a custom ROM, you need to unlock the bootloader first Not all brand acts in the same way either: some manufacturers release their smartphones with the bootloader already unlocked (to the delight of most computer geeks). Manufacturers lock the bootloader of their devices so that only the operating system installed on the device can be used. The same principle also applies to Android devices, except that there is only one operating system in this case. The bootloader determines when to run Android or when to enter ecovery mode, which is an independent runtime environment in a partition separate from the main Android OS that can be found on all Android devices.Īn action shot of unlocking the bootloader of our Nexus 6P. In this case, either one or the other bootloader starts, depending on the user's preference or what has been pre-programmed to happen automatically. It may occur that a device, a computer for example, may be equipped with two different operating systems (dual boot).
It is therefore not only a trait reserved to Android, but also one that can be find out all devices with an operating, be it a smartphone, a tablet, a PC etc. The bootloader is a program that starts whenever a device is powered on to activate the right operating system. Why brand manufacturers lock the bootloader?.
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