Now that the latest release of the Android Jelly Bean 4.2.2 update is released, it's time again to root your Nexus 7.

If you're new to Android and asking what rooting is, it can be best described as freeing and taking control of your device.

Rooting allows you to gain access to your device in a way that you normally wouldn't be allowed to. For instance, you know all those additional apps that you really don't need and would love to uninstall, but can't? You can make those apps disappear through the wonderful process of rooting. And what about those annoying ads that pop up on the free games and utility apps that you download from the Play Store? Those can be banished to non-existence as well.

Not only will you not see them, but your battery will last longer since those pesky ads also consume your device's juice.

There are apps available for download exclusively for rooted devices, like backup programs, ad blockers and program startup managers. You can make a full backup of your entire phone, including your system's settings and widgets. Ad blockers do exactly what it says and startup managers allow you control what programs run when you boot up your device. Rooting allows full customization of your device, allowing you to change your boot screen and even the entire ROM.

Disclaimer: iTechPost will not be held responsible for any damages to your device. All of the utilities in the guide belong to the owners or developers. Use at your own risk. Please also note that this guide is for the Galaxy Nexus 7 tablet running Android 4.2.2. DO NOT try this on any other device.

First, make sure you have installed the Android 4.2.2 USB drivers for the Nexus 7. You may download the drivers here.

Always backup important data that you might need after you install a new custom ROM, an official software update or anything else. Your Google account normally backs up your contact data automatically. To confirm that your data is backed up properly see this guide here.  

Then follow These Instructions, courtesy of TeamAndroid:

Step 1 - Download Android SDK from the website and install

Step 2 - Enable USB Debugging mode in your Nexus 7 tablet.

Step 3 - Download Fastboot and extract it to the directory android-sdk-windowsplatform-tools.

If the directory does not exist, you can make one.

(NOTE: Skip Steps 1, 2 and 3 if you already downloaded them)

Step 4 - Download SuperSU v1.04 (UPDATE-SuperSU-v1.04.zip) and copy it to the SD card (internal storage) of your tablet.

Step 5 - Download recovery-clockwork-touch-6.0.2.3-grouper.img and copy/paste it in the android-sdk-windowsplatform-tools directory.

Step 6 - Go into Fastboot Mode on Nexus 7 by pressing the Volume Down + Power keys for a few seconds till you see the text on the screen: "This is Bootloader Mode."

Step 7 - Go to the android-sdk-windowsplatform-tools directory and open Command Prompt (Shift + Right-click > Open Command Prompt).

Step 8 - Type in the following command : fastboot flash recovery recovery-clockwork-touch-6.0.2.3-grouper.img then (press Enter)

Step 9 - Once completed, choose RECOVERY from the Fastboot menu and enter Recovery Mode.

Step 10 - Scroll down to "flash zip from SD card" and press the Power button to select it.

Step 11 - Press the Power button again and select "choose zip from sdcard".

Step 12 - Using your volume keys, navigate to the UPDATE-SuperSU-v1.04.zip file that you copied to your SD card (internal storage) and select it using the Power button. Confirm the installation on the next screen and the installation procedure should start now.

Step 13 - Once the installation is complete, hit "Go Back" and select "reboot system now" from the recovery menu. The tablet should reboot now.

Congratulations! Your Nexus 7 running Android 4.2.2 JDQ39 is now rooted with ClockWorksMod's custom recovery. To verify you can look in your apps and you will see the "SuperUser" icon.