HTC and Google finally released Nexus 9, so now you can test Android 5.0 Lollipop on a great new Nexus branded tablet. But, for properly using your new device, you have to make some minor changes on the default Lollipop system. The first thing to change is the system access which is currently restricted. Thus, you need to consider in unlocking your Nexus 9 bootloader. The unlock process can be easily and quickly completed, though it is a little bit more complex on Android 5.0 than on previous versions of Android OS.

Of course, I will show you how to properly unlock the bootloader of your new HTC Nexus 9 tablet during the guidelines from below. Moreover further general and also dedicated details about the bootloader operation will be explained below, which makes this tutorial suitable for both entry level and experienced Android users. Bottom line, in the end you will learn how to unlock your Google Nexus 9 bootloader without risking in damaging or in bricking your tablet.

But first let’s see what we can clarify when speaking about the operation you are about to perform. Basically you need to know what bootloader means and why you should unlock it. Bootloader is a small program that comes pre installed on your Google Nexus 9. This small program runs each time you boot or reboot your tablet. Its purpose is to load essential start up programs, features and the Android Lollipop OS from the ROM memory into the RAM memory. So, in a few words, your handset can’t run without the bootloader.

By default each Android device comes pre installed with a locked bootloader. This aspect implies in restricting your access. So, if you want to use your Google Nexus 9 on full power and if you want to gain full control over the Android system, then you first have to unlock its bootloader. After completing this operation you will be able to consider in applying further complex and custom operations such as ensuring root access, installing a custom recovery image, flashing a custom kernel, updating with a custom ROM, overclocking your Android device and so on.

Thus, performing this unlock process will be the first step to make when thinking in tweaking your tablet for optimizing and customizing its performances and its Android 5.0 Lollipop firmware.

But, as usual, an unlock process can’t be official. The same is applying for this tutorial which means that if you choose to apply the guidelines from below you will also lose the warranty of your tablet. For the future, you should know that you won’t be able to reclaim your warranty anymore. If you will have to take your Nexus 9 back to service for technical assistance, you will have to pay for that services – if you will be dealing with software related issues you can then choose to manually troubleshoot your Android device.

So, that’s what you need to know about the bootloader and about this dedicated step by step guide. Now, in order to make things right and for avoiding unpleasant situations, before starting to complete the steps from below, read and apply the pre requisites list that is detailed here:

  • Backup your data – take care of everything you might need afterwards, as if something bad happens your data might get corrupted or wiped out.
  • For the backup process you can consider in using dedicated tools from Google Play – most of the apps are free distributed. You can also use a cloud storage system or you can temporarily transfer your data on a computer or notebook.
  • A computer is required and on the same deactivate – only during the unlock process – the antivirus and any other security protection.
  • Then, on the computer you are using install Android SDK and Fastboot: learn how to set up ADB on MAC OS X / Linux or install Android SDK on Windows.
  • Moreover, ensure that your Nexus 9 USB drivers are installed on your PC.
  • Enable Developer Options on your tablet – just go to “menu – settings – about phone” and tap 5 or 6 times on Build Number.
  • Now check USB Debugging option on your Nexus 9 by heading towards "menu - settings - developer options".
  • Up next, on your tablet tap on menu and hit settings. Then choose About Phone; from there select and thick the checkbox dubbed as “Enable OEM unlock”.
  • Plug in the charger in your device as it is important to fully charge it before checking how to unlock the bootloader.
  • You should complete the charge if the battery status is showing less power than 50% - else your HTC Nexus 9 might get turned off in the middle of the unlock process (if that happens your tablet might get damaged).
  • Apply the steps from below only if you have the Google Nexus 9 tablet running on Android 5.0 Lollipop. This tutorial is compatible only with the mentioned device so don’t mess things up.

How to Easily Unlock Google Nexus 9 Bootloader

  1. Connect your tablet with your computer – plug in the USB cord for establishing the connection.
  2. On your PC navigate towards Android SDK folder.
  3. From there open a command prompt window – you can do that by pressing and holding Shift keyboard key while right clicking on any blank space.
  4. Connect your Nexus 9 with your computer via USB cable.
  5. Check "Allow USG Debugging" option when prompted.
  6. On the cmd window from your computer type the following command: "adb reboot bootloader".
  7. Your tablet will be now entered in bootloader mode.
  8. Return to the cmd window and type: “fastboot oem unlock”.
  9. When prompted, press Volume Up on your tablet to confirm.
  10. Your device will reboot and you will see the bootloader mode in the end with the unlock status displayed.
  11. Perfect; unplug the USB cable and select Reboot option from bootloader mode as you are done.

Good job. Your Google Nexus 9 is now running on an unlocked bootloader. You can now start to customize, optimize and upgrade your tablet by completing various custom operations. Let us know how things worked for you by sharing your thoughts during the comments area from below.

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