How To Root the 3G/4G Xoom Android rom Updates

Prerequisites: 

1) Copy whatever you want to retain, your device will wipe when it unlocks
2) You must have SDK/ADB set up,
3) Open SDK and copy all of the files inside of tools folder and paste them inside of platform-tools folder. Vice versa will work as well. If it asks you if you want to replace files select no. The folder you paste these files into will be the folder you will run ADB commands from.
4) Download the file from the link below. Unzip the file and place the three modules in the folder you will be running commands from (either tools or platform-tools).

Download:

3G/4G Root Files

Notes:

In the following two sections you will see red text. This text represents the command that needs to be entered in ADB/Command Prompt. After each command press enter and wait for your computer to push the info to your Xoom. When you see the next command line come up you are ok to enter the next command. You can copy and paste the commands if you would like. 

1) To start the process place your Xoom into USB debugging mode. This is done by going to settings, applications, development, and checking the box next to USB Debugging. 
2) Plug your Xoom into your computer, open your command prompt (with the path set to the correct folder) and type adb devices
3) If you get a string of numbers your good to proceed, if not refer back to Click here to see where you went wrong.


Unlocking: 


adb reboot bootloader
Xoom will reboot into a screen with text on the upper left corner. While you are on this screen enter the following
fastboot oem unlock
A bunch of text will appear and you will need to use the down volume rocker to select yes, followed by volume up to confirm
Xoom will then wipe, reboot, and your back up and running. At this point you may need to go back and re-enable USB debugging


Rooting:

You need to be unlocked to run the following commands. If you have not, see the above section.

adb reboot bootloader
Xoom will boot into that familiar screen with text on the upper left corner
fastboot flash boot rootboot.img
fastboot reboot
Xoom will then reboot and you should be back to your home screen. 
adb remount
adb push su /system/bin/
adb shell
chmod 4755 /system/bin/su
exit
adb push Superuser.apk /system/app/

At this point you should be rooted, congrats!