The “stock” moniker is added to represent the unmodified state of a boot image file. It is also the first partition image loaded by the bootloader during a normal boot process. Your Android device’s bootloader is now unlocked.According to Google, an Android boot image (often referred to as a boot.img) contains the kernel and ramdisk that loads the Android system. During reboot, your device will go through a factory reset and then finally boot into system.You need to boot it into the system now using the command below: Once the bootloader is unlocked, your device will reboot into bootloader mode.This will begin the bootloader unlocking process, which shouldn’t last more than a couple of minutes. Press Volume Up button to highlight Yes and press Power button to select it. (Not applicable for all) If you get a confirmation screen on your device.If the above command doesn’t work, run this command (older devices need this): fastboot oem unlock Once your device is in bootloader mode, issue the following command to unlock bootloader:.└ You may get a request to authorize USB debugging on the device, accept it. Boot your device into bootloader mode using the following command:.Connect your device to the PC with a USB cable.Enable USB debugging and OEM Unlock on your Android device.So make you backup the important files before unlocking the bootloader. Including photos, videos, movies, documents, apps, games, basically everything. Note: Unlocking the bootloader will completely wipe/delete all data on your device. Also, make sure your device is at-least 20% charged before you attempt to unlock bootloader.

To unlock bootloader via Fastboot you’ll need a PC and ADB with Fastboot setup, which can be tricky for some, but we’ll guide you through. It’s okay if you’re not sure about your device though, you can still give with the Fastboot bootloader unlock process shared below.

This guide has bootloader unlocking steps for the devices that support direct bootloader unlocking without the interference of a manufacturer. For your information, most Motorola’s, Sony, LG (flagships only) doesn’t support direct bootloader unlock. This way the manufacturer gets to know that bootloader has been unlocked on the device and thus disables warranty on it. Many manufacturers put up a setup on their devices to let users unlock bootloader only when they request a bootloader unlock token.

But not all Android devices support straightforward bootloader unlocking. Unlocking the bootloader via Fastboot is the easiest thing to do.

Fastboot flash boot img