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Unlock Nexus 7 2013 Bootloader


Now there are two methods. You could either use our one click automated script OR do it manually.
Method 1
Unlock the bootloader using our one click script.
  1. Turn on USB Debugging  on your Nexus 7 2013
    1. First enable Developer options by going to Settings » About tablet » and tap build number 7 times
    2. Now open Developer options from settings (right above ‘About tablet’) » tap on USB debugging » tap Ok to confirm
  2. Connect your Nexus 7 to computer after enabling USB debugging. A pop-up menu may appear on your tablet now asking you to authorize USB debugging for the connected PC → tap Ok or Yes (whatever it asks for)
  3. Now open the folder where you extracted the downloaded nexus7-fastboot-files.zip file
  4. Look for the 1-click-nexus-7-bootloader-unlock.bat script file inside the folder and execute it by double clicking on it
    ..If the script hangs on the  < waiting for device > for a long time (say 2 minute) then that means you’ve a drivers or some connectivity related issue on your computer. To troubleshoot this, follow the drivers installation guide link provided above
  5. After a few seconds, a screen will show up on your Nexus 7 asking you to accept the Bootloader unlocking request. Accept it by selecting Yes using the Volume button and then press the Power button to confirm
  6. That’s it you’re done.
Method 2
Do it manually using the command window prompt
  1. Put your Nexus 7 in bootloader/fastboot mode:
    1. Switch off your Nexus 7
    2. Hold Volume Up Key + Volume Down Key and then press the Power button
    3. You’ll see a Android robot. And the first line on the bottom left corner would read FASTBOOT MODE in red
  2. Now open the folder where you extracted the downloaded nexus7-fastboot-files.zip file
  3. Hold Shift key and Right click at any empty space inside the folder, and select Open command window here from the context menu
  4. Now connect your Nexus 7 to your PC using a USB cable, and then type fastboot devices in the command prompt to make sure your device is recognized
    → In case if your device isn’t recognized and the fastboot devices command doesn’t show any device as list, then it means you down’t proper drivers installed for your N7. Follow the link provided above for troubleshooting drivers and other connectivity related issues
  5. And now to unlock the bootloader, type this in the command prompt:
    fastboot oem unlock
  6. Accept the request on your Nexus 7 by selecting Yes using the Volume button and then press the Power button to confirm
  7. Download Fastboot files

    Download and extract the nexus7-fastboot-files.zip file from the link below to your PC. And remember the location of the folder where you extract the contents of the zip file
  8. Download driver

    Download the Google USB Driver from this → link.
    Source Link