OnePlus 6T Unlock Bootloader

• Ensure that the device is on the latest Android 10 firmware.
• Ensure that the device has at least 60% battery remaining.
• Make sure your computer has adb and fastboot. Setup instructions can be found here.

The steps below only need to be run once per device. Unlocking the bootloader will erase all data on your device!

1. Prepare phone:
   1. Enable Developer options: Settings > System > About. Tap repeatedly on “build number”
   2. Go back to System, then go to developer options.
   3. Enable USB debugging
   4. Enable bootloader OEM unlocking, if present
   5. Enable advanced reboot options.
2. Connect the device to your PC via USB.
3. Boot into fastboot mode. Open a terminal window, and type:

   adb reboot bootloader

   You can also achieve this via a key combination: Enter-fastboot-recovery.

4. Once the device is in fastboot mode, verify your PC finds it by typing:

   fastboot devices

   Tip: If you see no permissions fastboot while on Linux or macOS, try running fastboot as root.

5. Now type the following command to unlock the bootloader:

   fastboot oem unlock

6. If the device doesn’t automatically reboot, reboot it. It should now be unlocked.
7. Since the device resets completely, you will need to re-enable USB debugging to continue.
8. You can check if the device is actually unlocked by executing:

   fastboot oem device-info

   It will tell you something like “device unlocked: true”. Please note it will ask you to erase all of your data, and that you must accept to continue.