Tips & Tutorials

Unlock Bootloader on OnePlus 3T – How-To Guide

OnePlus focuses on the developer end of its smartphones hence you can easily unlock bootloader on the OnePlus 3T. The exact procedure has been mentioned below. It starts off with installing proper USB drivers for your phone and then running few adb commands. The process is quite quick and you don’t need any sort of confirmation code from OnePlus to unlock the bootloader. Also, once you unlock bootloader on OnePlus 3T, you would be able to flash third-party custom ROMs, packages and more. These include custom recoveries like TWRP. We have made sure that we give adequate detail of each step and provide tips as well. Read further to find out how to unlock bootloader on the OnePlus 3T.

As you continue reading below, we will guide you on how to unlock OnePlus 3T bootloader for installing custom ROMs, a custom recovery or doing anything nasty with your phone — most of all, you will be able to root OnePlus 3T on Android 6.0.1 Marshmallow and enjoy the various root apps. Just to be clear, unlocking bootloader will wipe ALL your data form the phone. So make sure you backup everything or unlock bootloader on a new device with nothing to lose.

Unlock Bootloader on OnePlus 3T - How-To Guide 9

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

There are tons of useful articles and how-to guides on Team Android for the OnePlus 3T, but we think you might be interested in the following posts:

OnePlus 3T USB Drivers

You will need to connect your Android phone with the computer. For that, please make sure you have installed the USB drivers for OnePlus 3T properly. If not, you can download the latest official drivers from our Android USB Drivers section here:

Download OnePlus 3T USB drivers!

Backup and Other Important Tips

Done with the USB drivers? Perfect. The tutorial is on the next page, but first, please take a look at the following tips and important points you need to take care of. These are important, as we don’t want anyone losing their personal data or apps:

Always backup your important data that you might need after you install a new custom ROM, an official software update or anything else. Make a backup for just in case, you never know when anything might go wrong. See below for some tips on how to backup data:

If you already have a custom recovery (ClockworkMod, TWRP etc.) installed on your phone, we strongly recommend a backup using that as it creates a complete image of your existing phone set up.

A few more optional tips that you should remember:

1. Having problems connecting your Android phone to the computer? You need to enable USB debugging mode. See here: How to Enable USB Debugging — for Gingerbread, Ice Cream Sandwich, Jelly Bean and KitKat.

2. Make sure your Android device is charged up to 80-85% battery level. This might help you: How to Check Battery Percentage. Why? Because, if your phone goes off suddenly while installing a custom ROM, flashing an official firmware update or installing mods etc. — your phone might get bricked or go dead permanently. No one wants that, right?

4. Most of the tutorials and how-to guides on Team Android are for factory unlocked Android phones and tablets. We recommend not to try our guides if your phone is locked to a carrier, unless we have specified the carrier name or device model.

5. [IMPORTANT] Copy all the backup files from your SD card to your computer as internal memory will be wiped clean while unlocking the bootloader.

If you are a developer and would want to unlock the bootloader, we recommend doing that before you set up the Google Play Store, install apps or anything because the security feature in Android clears out everything from your phone when unlocking bootloader of a phone.

Now, let’s proceed with the tutorial below to unlock OnePlus 3T bootloader.

How to Unlock Bootloader on OnePlus 3T

We have put together a detailed step-by-step instructions guide on how to unlock bootloader on OnePlus 3T. If you are used to unlocking bootloaders on any previous Nexus devices, then this should not be any different for you.

Please read every line carefully and make sure you read the tutorial once before actually performing it on your Android device.

To Remember:

  • This unlocking bootloader tutorial is only for OnePlus 3T. Please don’t try this on any other variants of the phone.
  • This tutorial has been performed on Windows, but anyone familiar with Fastboot on Mac or Linux can perform this as well.
  • Make sure you backup all your data in your phone before proceeding as it will erase all data.
  • You will void your warranty by unlocking the bootloader.

Requirements:

  • OnePlus 3T
  • USB cable
  • Android SDK with drivers (tutorial link given below)

Step 1 – Download Android SDK / Fastboot and install all the USB drivers. How to set up? Read detailed instructions here: How to Set Up ADB / Fastboot with Android SDK.

Step 2 – Enable USB Debugging mode on your OnePlus 3T.

Step 3T – If you already have Android SDK, then you can just download Fastboot and extract it in android-sdk-windows\platform-tools directory. Create directory if not already there.

Step 4  – Enable OEM unlock on your phone. Activating the “Enable OEM unlock” is necessary for the bootloader unlock. To enable OEM unlock, go to Settings >> Developer options and check Enable OEM unlock.

Step 5 – Make sure you have backup your data as it will be erased. Connect your OnePlus 3T to your PC.

Step 6 – Navigate to android-sdk-windows\platform-tools directory and open Command Prompt (Shift + Right-click > Open Command Prompt).

Step 7 – Now enter into the Bootloader / Fastboot Mode on OnePlus 3T. How? Type the following command in ADB.

adb reboot bootloader

Step 8 – Get the Device ID by typing in the following command. The result will be similar to the format given below.

fastboot oem unlock

NOTE: Depending upon your device’s region, a screen might pop up with Chinese writing. The upper portion roughly translates to confirm and proceed while the bottom one translates to cancel. Touch on the upper part to continue.

Step 9 – The phone will reboot normally after it has unlocked the bootloader. To confirm, use  Step 7 to boot into fastboot mode and issue the following command:

fastboot oem device-info

Unlocked Bootloader will yeild the following output:
(bootloader) Device unlocked: true

Step 10 – Reboot and enjoy!

fastboot reboot

That’s it! Your OnePlus 3T bootloader is now unlocked! You can now install a custom recovery, a custom ROM or any system tweak you like. Just be careful with what you do! 😉

About the author

Taimur Akmal

Devoted writer, enjoys developing code. Appreciates excellent food, exceptional coffee and great company. He is also into sublime design and nicely built cars.

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