OneClick Root, Unlock, CWM for Galaxy Nexus Android ICS 4.0.3
Nexus Root Toolkit was the first one to allow oneClick ICS Rooting solution, now comes the Galaxy Nexus Toolkit v3.0 that does all OneClick Root, Unlock CWM, flash and more on Galaxy Nexus Android ICS 4.0, 4.0.2, 4.0.3.
How to OneClickRoot, Unlock, Flash, CWM on Galaxy Nexus ICS 4.0.x
Phase 1. Adb / FastBoot Drivers
The first thing you need to do is to install the adb/fastboot drivers.
Step 1. The easiest ones to use are PdaNet for Android, download and run the 32-bit Windows 7/Vista/XP or 64-bit Windows 7/Vista and follow the instructions to install (selecting Samsung as your device manufacturer if asked). You can remove PdaNet later.
Step 2. When drivers are installed, unplug the usb cable and power off the phone. Press and Hold the ‘Volume Up’ and ‘Volume Down’ buttons and press the ‘Power’ button to boot the phone into FastBoot Mode.
Step 3. On Windows, goto Device Manager to verify that the FastBoot driver is installed. Now connect the usb cable. In the Device Manager a new item called ‘Android 1.0′ should pop up and then the driver should install automatically. You manually isntall the driver if it fails by selecting ‘browse my computer’ and then ‘Let me pick from a list’. If you’re still stuck with driver, use this guide or Universal Drivers made by 1wayjonny here.
Phase 2. How to Use MSKIPS’ Galaxy Nexus ToolKit v3.0
Step 1. Extract the files from the archive you downloaded initially and put your phone into Fastboot Mode (Hold ‘Volume Up’ and ‘Volume Down’ buttons whilst pressing the ‘Power’ Button) and run the RUNME.bat file
Note: Do not run this in admin mode, or it would cease to work. With V3.0 you can also connect your phone whilst it is in Android as you can boot to Fastboot from the MainMenu.
Step 2. The first screen gives you information about setting up adb/fastboot drivers if you havent done already. The second screen gives information on the various options available from the Main Menu. The next screen will ask you which model and Build you have (GSM or LTE) and set up the Main Menu accordingly.
Step 3. When you enter the Main Menu you will see ‘Serial Number’ at the top. If you have installed your drivers correctly then you will see your phones serial number under Fastboot Mode or Adb Mode depending on your connection. If you see this then your device is connected and you can carry on. Each option has full information on what it is and how to use it.
Step 4. After you have finished you can either boot straight into CWM Recovery to flash a Custom Rom (if you have already downloaded one and copied it to the root of your Internal Memory on your phone) or boot back into Android as normal.