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I rooted my Nexus 7 2012 Wi-Fi running 5.1.1. yesterday (worked great). I tried to flash a ROM for Kitkat (KTU84P) and it stopped booting. I've tried all the usual ways to hold down the Power, Vol +, Vol -, and both volume buttons. I can cycle through the START, RESTART BOOTLOADER, POWER OFF, AND RECOVERY MODE options but NONE of them work except OFF. RECOVERY MODE shows BOOTING FAILED when I push the power button. NOTE: I can't load any files to the Nexus 7 because after it bricked, the USB cable doesn't even recognize the tablet and there's no way to transfer files or see what's on the Nexus. I'm guessing I'm hosed, but thought I'd ask to see if there's any way to fix the USB issue (worked before it got bricked) so I can download files and fix it.

  • You can do it in fastboot mode. Just install proper drivers. – esQmo_ Dec 21 '16 at 2:53
  • I sincerely appreciate the response, but I can't boot into recovery OR Fastboot mode. It just fails. My only option is OFF. I get a fail message for bootloader and recovery. I can't figure out how to load any files to the Nexus since my computer no longer recognizes that's it's plugged into the USB port. If I could get files onto my Nexus, I would try the above suggestions, but when the computer can't see the Nexus, what's left to do? – Bob Dec 22 '16 at 15:07
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You may easily fix this and unbrick it using the stock Google Android Factory Image.

Step-1: Download the latest Android Factory Image file for Nexus 7 from here

Step-2: Extract (Unzip) the content from the downloaded file and save it in a folder on the computer.

Step-3: Download USB drivers from here

Step-4: Boot the tablet into Fastboot mode. For this press and hold Volume Down and Power buttons together. Release all the buttons when the Fastboot screen appears. You should see the Start option listed in the upper part of the screen.

Step-5: Connect the Nexus 7 to the computer using USB cable.

Step-6: Navigate to the Factory image folder created in step-2.

  • For Windows: double click  flash-all.bat file.

  • For Mac or, LINUX users launch flash-all.sh file

Step-7: Wait for some time until the installation is completed

Step-8: When the installation process is completed, press Volume Up until the Start next in the Fastboot Mode changes to Recovery mode then press Power button to boot into Recovery.

Step-9: Select wipe data/factory reset and confirm the process

Step-10: When the Factory Reset is completed, select reboot system now and wait until the Nexus 7 boots into stock Android

  • I sincerely appreciate the response, but I can't boot into recovery OR Fastboot mode. It just fails. My only option is OFF. I get a fail message for bootloader and recovery. I can't figure out how to load any files to the Nexus since my computer no longer recognizes that's it's plugged into the USB port. If I could get files onto my Nexus, I would try the above suggestions, but when the computer can't see the Nexus, what's left to do? – Bob Dec 22 '16 at 15:08
  • Are you on a Windows computer ? Open device manager then connect the phone and see what's shown there. – esQmo_ Dec 22 '16 at 15:32
  • Using Win 10. On device manager, nothing new shows up when I plug the Nexus into my USB 2.0 or USB 3.0 port. Nothing shows up in device driver or using the windows+e key (which always worked in the past). It's like the Nexus USB port is not there. My computer must sense something because Device driver blinks but nothing shows up – Bob Dec 22 '16 at 15:41
  • Under portable devices, I see D, portable hard drive, E, F, and G. When I plug in the Nexus, nothing new shows up. I have a Dell XPS 8900 Win 10 with 16GB RAM. – Bob Dec 22 '16 at 15:44
  • Under USB Controller, I see an exclamation point and when I click on it, it says: Windows has stopped this device because it has reported problems. (Code 43). A request for the USB device descriptor failed. – Bob Dec 22 '16 at 15:48
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If you install fastboot and adb drivers onto your computer, it shouldn't matter if your tablet is in bootloader, failed to get into recovery (usually because while trying to install a ROM, most will use a custom recovery like TWRP, and if not installed properly, it is only a one use recovery, untill the OS is Booted then its gone.) all you need is ADB and fastboot on your computer, then flash a new rom, or a stock rom through cmd.

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