The Google Nexus 7 bootloader can be unlocked manually using the instructions that I've listed in this tutorial.
At the end of this post you will find a small 1-click toolkit that allows you to apply Unlock Bootloader task for your Nexus 7 along with support for rooting it and installing USB drivers for the device on your computer.
Unlocking the bootloader of your Google Nexus 7 tablet can be done easily, but you should know that it will delete all the data that is stored on your device. If you unlock the bootloader of your tablet you will then be able to achieve root, flash new kernels, new custom ROMs, themes, or any other type of file you wish to use in order to customize Nexus 7 interface and improve the overall Android experience.
Before starting the bootloader unlocking process you will also need to take a look at the guidelines below:
- after the bootloader is successfully unlocked you will lose all data stored on your device.
- use this post only with Google Nexus 7
- make sure to create backups for all important files that are currently stored on your device.
- the Nexus 7 warranty might be voided if you unlock its bootloader.
- enable the USB Debugging option from the Developer Options menu.
- if Developer Options menu doesn't appear in Settings menu, then you need to enable it like this: open 'About device' menu, tap seven times on the 'Build Number' section.
- after you're being told that you are a developer, then you should go back to Settings menu, open Developer Options and enabled USB Debugging.
- make sure that you have correctly configured the Android SDK (alternate link) on your computer.
- Android SDK along with Fastboot allows users to push devices to their Nexus 7 and send the 'unlock bootloader' command.
- disable all antivirus applications from running on your computer.
- check the tablet's power charge level and make sure that it is over 50%, this will make sure that your tablet will not power off in the middle of the process.
- this is a guide for advanced users, do not blame us in case you brick the Nexus 7 tablet, nor in case you lose any important data in the process.
- read the entire post and make sure that you won't skip any steps that I've listed in the tutorial.
- if you need any extra help, then you should use the comments field.
Now that you know all of the above you can continue to the next part of this post.
How to unlock Google Nexus 7 Bootloader manually:
- Download Fastboot.exe file.
- Get the Executable Fastboot file and place it in SDK / Tools or Platform-Tools folder.
- this file has to be placed in the same folder as the 'adb.exe' file is located.
- Connect your Nexus 7 to your computer.
- make sure that the USB Debugging option is enabled in Developer Options.
- Go to the folder where you have the adb.exe and fastboot.exe files.
- Press and hold SHIFT key. Next, while holding SHIFT you should right-click on the folder's white space.
- Select the 'open command window here'.
- The Windows CMD screen will load and you have to enter the following command line: adb reboot bootloader
- The Nexus 7 will restart and boot into Bootloader mode automatically.
- Next, in order to unlock its bootloader you will simply need to enter the following command line: fastboot oem unlock
- note that after you press Enter key the Nexus 7 will be wiped completely and its bootloader will be unlocked in the process.
- Confirm the process.
- After the Nexus 7 Bootloader has been unlocked successfully you will see the 'LOCK STATE' value set to 'UNLOCKED'.
- Reboot the tablet and wait for it to load the Android home screen.
These were all the steps that you had to take in order to successfully manage to unlock your tablet's bootloader manually.
If you want to do it using a 1-click Toolkit from Wugfresh. Download the root toolkit and save it on your computer. After the download is complete you should simply launch it on your PC, then connect the Nexus 7 and use the 'Unlock' button to start the process.
I hope that you've managed to successfully unlock your tablet and that now you're capable of rooting it and installing any customization file you want. For any other questions you should use the comments field below.