Unlock Bootloader of Android with easy method. Using simple steps guide, officially unlock bootloader of Redmi, Poco f1, Moto, Mi, Realme, Xioami, Zuk, Sony, Samsung, Huawei, Nokia, Honor, Google Nexus, Google Pixel, LG, Vivo, Oppo, OnePlus etc. Unlock bootloader without PC using adb and fastboot. This guide can fix bootloader unlock allowed no error.

Do you want to root Android smartphone or tablet? Do you want to install TWRP recovery and flash custom ROMs? If yes, then you are at the right place. In this tutorial, we’ll discuss some easy steps on unlocking bootloader of any Android phone. Before you install TWRP recovery or flash custom ROMs, you will have to unlock the bootloader of your Android.

Related: How to Unlock Bootloader without PC.

Unlock Bootloader of Android

What is Bootloader?

Bootloader is a code that is executed before any Operating System starts. Every Android phone has a bootloader that instructs the OS kernel to boot normally. Since Android OS is an open source OS, every manufacturer has their own version of bootloader.

Why is Bootloader locked?

It is not possible to install TWRP recovery or flash custom ROMs on a locked bootloader. Forced attempts of unlocking bootloader can not only void warranty but also brick the device. Hence, to make the users stick to their official Android OS, the manufacturers usually lock the bootloader.

Why to unlock Bootloader on Android?

If you want root, flash custom recovery like CWM/ TWRP or flash custom ROMs, then you need to have your bootloader unlocked. That means unlocking bootloader allows you to gain root access, flash unofficial custom recoveries, third party custom ROMs, take nandroid backup and restore, increase internal memory, remove bloatware and much more.

Phones like Motorola, Sony, LG, HTC, Xiaomi, Huawei uses a unique code through their website for unlocking of bootloader. Samsung phones (Exynos models) which can be rooted have unlocked bootloader. Whereas the new Snapdragon models of Galaxy S9, S9 Plus, S8, S8 Plus, S7, S7 Edge, Note 8 etc. all have locked bootloaders.

Bootloader of Google Nexus or Pixel devices like Pixel 2 XL, Pixel 2, Pixel XL, Nexus 6, Nexus 6P etc can be easily unlocked using this guide. Also the bootloaders of all OnePlus devices including OnePlus 6, OnePlus 5/5T, OnePlus 3/3T etc. can be unlocked. If you’re not sure whether bootloader of your device can be unlocked or not, you can still refer this tutorial. Its great if it passes. If it fails, no damage will be done.

Disclaimer:

We at Droidthunder.com will not be responsible for any damage caused to your device by referring this guide. Also unlocking bootloader of your phone voids its warranty.

Pre-Requisites:
  • Charge your Android device at least upto 50%.
  • (Important!) Unlocking  bootloader will erase everything on your Android. Hence backup your data including contacts, messages, apps, call logs, notes etc. before moving ahead.

Unlock Bootloader of Android

Steps to Unlock Bootloader on Android:

Step 1: Go to Settings and enable USB debugging mode on your device. Refer:

Step 2: Also Enable OEM unlocking and Advance reboot mode from the Developer options.

Unlock Bootloader of Android

Note: Older Android devices may not have these options. So if you don’t find these options anywhere, just skip this step.

Step 3: Download and install ADB and fastboot drivers on your Windows PC. Refer:

Step 4: Using standard USB cable, connect your Android device to PC.

Note: Ensure that Mobile USB drivers are installed on your PC. If not, then refer:

Step 5: Go to the location where you’ve installed adb and fastboot drivers. (For example: C:\Program Files\Minimal ADB and Fastboot folder). Then by holding shift button of your keyboard, right click on empty space. From the list, choose Open command window here option. This will launch the command window.

Unlock Bootloader of Android
Unlock Bootloader of Android

Step 6: Then type the following commands one after one in the cmd window, and press enter key:

adb devices

Unlock Bootloader of Android

With this command, a message saying ‘List of devices attached’ along with few random numbers will appear. That means it will confirm that your Android device is successfully connected to PC.

Unlock Bootloader of Android

Note: If such thing doesn’t happen, then either re-install mobile USB drivers from the link given above or change the USB cable/PC.

Step 7: Type the next command and press enter:

adb reboot bootloader

Unlock Bootloader of Android
This will restart your device into fastboot mode.

Step 8: Then type the fastboot command and press enter:

fastboot devices
Unlock Bootloader of Android
Unlock Bootloader of Android
Step 9: To unlock the bootloader, type either of the command and press enter:

fastboot oem unlock

OR

fastboot flashing unlock

Unlock Bootloader of Android
Unlock Bootloader of Android
With this command, you’ll see a message on your device asking to Unlock Bootloader.

Unlock Bootloader of Android

Note: On your phone screen, use Volume Up and Down keys for navigation and Power key for selection.

Step 10: So using Volume keys navigate to Yes option and press Power key to select it.

Unlock Bootloader of Android

The actual bootloader unlocking process will begin now.

Once the bootloader unlocking process completes, your Android device will automatically restart itself.

Note: If the following screen appears on your phone, then use Volume and Power keys to select the Start option and reboot your phone.

Unlock Bootloader of Android

Awesome! The bootloader of your Android device is successfully unlocked.  Now you can root, install custom recovery, flash custom ROMs, take nandroid backup, and much more.

For any issues related to this guide, kindly contact me through the comments section. I’d be happy to help you guys.

Till then keep smiling and peace out! 😊✌