The Android is known for hacks, but sometime hacks can be harmful for your Android device like sometime rooting the device or flashing custom ROM can brick your device. Those of you own a Nexus 7 and have bricked the tablet during the installation of anything or rooting and now can’t get it turn, they now can unbrcik your Nexus 7 by restoring it, it will take your Nexus 7 back to an out of box state.
You just need to install the stock boot.img to do so, read on how to install it, but first do note that you need to use a Windows PC with Android ADB installed on it, you can follow our this guide to install ADB drivers.
DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or get damaged following this guide.
Step #1: Download the stock img from Google for your Nexus 7 to your PC, download 4.1.1 version from bottom link.
Step #2: Copy the downloaded image to the C:/android-sdk/platform-tools/ folder.
Step #3: Unzip the downloaded .zip (you downloaded from Google page).
Step #4: Copy files from the folder you got in step 3 to C:/android-sdk/platform-tools/ folder.
Step #5: Turn off your Nexus 7.
Step #6: Reboot tablet by holding down volume down and power buttons, you’ll see bootloader screen on the tablet.
Step #7: Plug the tablet to your PC using USB cable.
Step #8: Open command prompt that can be found from Start>Programs>Accessories and navigate to platform tool folder inside SDK, if you’re using Windows 7, you can open command prompt directly from the SDK folder, to do so, go to SDK folder, there hold down shift button on keyboard, then press right click on mouse, and then select open command prompt here.
Step #9: Enter following commands to command prompt:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
Step #10: Once you’ve entered above commands, enter another following command:
fastboot oem unlock
Step #11: Enter another following command to install img file:
fastboot flash bootloader bootloader-grouper-3.34.img
Step #12: Once above img is installed, enter following command:
Step #13: Now enter following command:
fastboot -w update image-nakasi-jro03d.zip
Step #14: Once the device is rebooted, turn off tablet again.
Step #15: Reboot tablet again in bootloader mode by holding down volume down and power buttons.
Step #16: Enter following command:
fastboot oem lock
Step #17: Enter following command, it will reboot device:
That’s it, you’re done, enjoy!
Via: The Unlocker