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Check How to Check If Bootloader Is Locked or Unlocked
The boot loader for each device is a code that is initially executed when the device is turned on. Provides instructions on how to load the operating system kernel to start the device. The bootloader status can be locked or unlocked. All Android manufacturers ship their smartphones with a locked bootloader for security reasons. To install a custom ROM or root a device, you must first unlock the bootloader. Bootloader status sometimes indicates the integrity of a device; For example, at companies such as Samsung and Huawei, unlocking the bootloader can void the warranty and untrust the device.
The best thing about an Android phone is that you can root it and run it however you want. If you have an older version of Android that is no longer getting updates, you can find a custom ROM to update and get the next version, or at least add some of its features. You can customize just about anything on a rooted Android phone, but you can also tweak it a bit once your bootloader is unlocked. You can check from your Android phone if your bootloader is unlocked or not. This method should work on most traditional phones, as well as a large number of shadow phones. There will be some exceptions and if this doesn’t work on your Android phone, you can always go for the PC solution.
Check from your Android device
On many Android phones, you can check if the bootloader is unlocked by dialing a code. If this doesn’t work, you can always use the second longest method.
To check the status of your bootloader directly from your phone, you must:
- Unlock your Android phone.
- Open the Phone app or Dialer.
- Enter the code: * # * # 7378423 * # * #
- This should automatically open a new window.
- Touch the service information.
- Open configuration.
- You should see one of two messages:
- Bootloader Unlocked Allowed – Yes
- Bootloader Unlocked – Yes
Check from your PC
To check the status of your bootloader from your PC, you will need to use an ADB and fastboot tool. Until recently, you needed to download the full Software Development Kit (SDK) to access ADB and fastboot. But now, you can get this lightweight tool separately.
Command Prompt Settings
When you install the tool, you must:
- Find the path to the ADB folder and fastboot.
- Click on the Start menu and type ‘cmd’ until the command prompt icon appears.
- Type the path to the ADB and fastboot folder at your command prompt. For example:
- C: UsersUsernameDownloadsADB and fastboot
Enable Fastboot mode
Once the command prompt is set, you need to set your phone in fastboot mode. To do this:
- Turn off your Android phone.
- Press and hold the Volume Down and Power / Unlock buttons at the same time until the phone turns on again.
- When it turns on, release the Power button, but hold down the volume down key until you see the bootloader menu. It should show the little Android bot lying on its back on a dark background, with some text underneath.
- Connect the computer and your phone with a data cable.
Status check
Now that everything is set up, you can use the command prompt to check the status of your bootloader. To do this, you must:
- Enter the command ‘./adb devices’ at the command prompt to check if ADB can locate your device. This should include your phone.
- Run the command ‘./adb bootloader’ to boot into the boot loader.
- Once you are in the bootloader, type the command ‘fastboot devices’ at the command prompt and run it. If it shows a code, that means the system can detect your phone.
- Enter the command ‘fastboot oem device-info’ and run it. It should list some device data, including bootloader information.
- Look for “Device Unlocked” in the information.
- If it says “true” next to it, it means your device is unlocked. If it says “false”, it means that it is still locked.
Final remarks: How to Check If Bootloader Is Locked or Unlocked
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