[With Root] How-to: Install Android 4.3 Jelly Bean On Galaxy Nexus

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First things first, neither I, nor Androwin, take the responsibility for any damage or natural calamity which might result after following this tutorial. However, succeeding in upgrading and rooting after following this tutorial might result in never-ending happiness.

Android 4.3 JB Galaxy Nexus

ALL YOUR DATA STORED ON THE DEVICE WILL BE WIPED, SO BACKUP

With that out of the way, let’s begin!

  1. Download the Android 4.3 Jelly Bean Factory Image from here. Takju/Yakju makes no difference. Select either of the two, and save it somewhere on your computer.
  2. Download Galaxy Nexus Toolkit v11.1 from here. For sanity, I’m going to assume it installed properly, and that it can detect your device. If not, this XDA thread is there for your perusal.
  3. When it asks you to select your build, go for 7, or 11 (Yakju or Takju. If you’re running a custom ROM, it shouldn’t matter, but go for Yakju, it will always work). The option number could be a little different, but you get the idea.
  4. Next, you’ll want to select option number 9 – to download, extract and flash the stock image from Google. If you’ve downloaded the Android 4.3 Factory Image from the link above,
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    select option 2, otherwise 1.

  5. Let the toolkit do its work, and select the appropriate options when asked.

So now that you’re running Android 4.3 on your Galaxy Nexus. You’re all set

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to follow the next set of instructions.

It’s the rooting part. If you don’t want to root, you can stop reading here. But if you do, read on.

We’ll leave the Toolkit now. We’re going to use something else. Before that:

  • Make sure you’ve enabled Developer options by tapping on the build number in Settings –> About.
  • After that, enable USB debugging. Connect your phone to the PC, and grant access when asked.

Now, you’ll need three things.

  1. SDK TOOLS from here
  2. recovery.img from here
  3. SuperSU 1.41 from here

Since we went through the Toolkit process above, you have your drivers installed properly. Now, moving on.

  1. Extract the SDK Tools zip in a place that’s easy to access. Place the recovery.img file you downloaded just now, in the extracted folder.
  2. Place the SuperSU 1.41 zip you downloaded on your phone. We’ll need this for rooting the device.

Now..

  1. You’ll have to reboot your device in Fastboot mode. Turn it off. Connect it to your PC. Now, hold Power, Volume UP and Volume DOWN simultaneously.
  2. In the SDK Tools folder, press and hold Shift on an empty area, right click and select Open command window here.
  3. Type: fastboot flash recovery recovery.img
  4. You have now flashed a custom recovery. Use Volume Down to get Recovery mode option. Press the power button when you do.
  5. After that, flash the SuperSU 1.41 zip and reboot the device.

You will now have a Galaxy Nexus running a version of Android announced only yesterday, with Root.

Gotta love the Nexus devices.