(Last Updated On: October 22, 2017)

Recently, I was publishing articles on rooting and unlocking bootloaders on Samsung galaxy devices. Recently, Google Nexus 9 is released with HTC. If you have got Google Nexus 9 and want to unlock bootloader on it then you should read the rest of the article. In this article, you will learn to unlock bootloader on Google Nexus 9 using built-in OEM unlock feature in developer options and via fastboot Windows too. It is totally up to you which method you would prefer to unlock bootloader on your HTC Google Nexus 9.

Bootloader

Bootloader is the heart of Android Rooting because bootloader allows you to install Custom ROMs in your Android device. As Custom ROM is not as the same as original OS (Stock ROM). And Custom ROM can cause your phone and already installed apps to stop working exactly how it should work.

Things you should remember while unlocking bootloader

Let me tell you that on unlocking the bootloader will void your phone's warranty. Weather it's an Official Firmware or Unofficial Firmware on unlocking the bootloader on your device, the phone manufacturer will not be able take any guarantee of your device to work properly.

The methods can be different for unlocking bootloader on Android smartphones depending on device manufacturer.


How to unlock bootloader on Google Nexus 9

Method #1: unlock bootloader on Google Nexus 9 (OEM Unlock)

Follow the steps to unlock bootloader on Google Nexus 9 using OEM unlock feature:

  • Go to Settings → Tap on Build number 7-8 times
  • This will make developers options available inside Settings
  • Now, if you have OEM unlock toggle available in your developers options

  • You can one-tab unlock bootloader (OEM unlock) on your Google Nexus 9
  • Tapping over blue toggle sign will unlock bootloader of your Google Nexus 9

This is the easiest way to unlock bootloader on Android smartphones so far and many Samsung Galaxy devices do have this feature.

Another method is a bit lengthy and tricky which requires USB drivers to be install and it actually requires PC. Make sure you must have pre-requisites ready before you start following the second method.

Pre-requisites:

  • Make sure your phone is 80% charged (If you phone goes dead in the middle of the process, you might end up bricking up your device)
  • Take necessary Android backup
  • USB cord
  • USB drivers installed on your computer

How to unlock Bootloader on Google Nexus 9

Follow the steps to unlock bootloader on Google Nexus 9:

How to Enable USB Debugging on Google Nexus 9

To enable the USB Debugging, follow the steps:

Go to your Settings -> About Phone -> Now Tap on the Build Number 7-8 times then you will see message appeared on the screen i.e., "Developer option enabled"

From Settings -> Developer options -> Enable USB Debugging 


  • Download ADB / Fastboot (this can also be done with Download Android SDK) and install on your computer.
  • Connect your Google Nexus 9 to your PC via USB cord
  • Run fastboot-windows.exe inside it
  • Now, select open command window here (Ctrl + R)
  • For Windows: In the directory, open Command Prompt (Shift + Right-click > Open Command Prompt)
    • For Mac and Linux: Use Terminal to navigate to the ADB / Fastboot directory
    • In the command prompt, type the following and hit enter:
  • adb-windows reboot bootloader (and wait for the device to reboot)After the device is rebooted run this command that will unlock oem unlock (unlock bootloader in Google Nexus 9):fastboot-windows oem unlock

Congrats, you have successfully unlocked bootloader on Google Nexus 9.

NOTE: You should understand one thing that your smartphone warranty will be void on unlocking bootloader on your Google Nexus 9. Read the disclaimer and don’t skip steps.