Galaxy nexus 升级到 Android 4.2 并root

刷机 请参考,http://blog.csdn.net/ultrapro/article/details/8084168

注意,该博文中刷的是Factory Images "yakju" for Galaxy Nexus "maguro" (GSM/HSPA+)

,但是4.2 没有出, 但是可以用该博文中的方法刷,下面的rom

Factory Images "takju" for Galaxy Nexus "maguro" (GSM/HSPA+) (with Google Wallet)

Version	Download	MD5 Checksum	SHA-1 Checksum
4.2 (JOP40C)	Link	1e62833203f9fd3aa63de9b59af784ca	1a47c890eece846b5098177e59e26cdb77a76640

该博文总的root方法在4.2 中失效.

4.2 root:

As expected, Google has begun rolling out Android 4.2 (Jelly Bean)
updates to its older Nexus-branded devices, starting from the Galaxy Nexus (I9250) - the third generation Nexus smartphone. The Over The Air (OTA) software update carries the build number JOP40C.

Galaxy Nexus users who have updated their devices to the latest version of Jelly Bean may follow the guide below to root their phones and to install ClockWorkMod (CWM) Recovery. The root method uses CWM Recovery as custom recovery and Superuser as the rooting
package. IBTimes UK reminds its readers it will not be liable for any damage to the device and that this guide is only for the Galaxy Nexus I9250 (on Android 4.2 JOP40C). Before following the tutorial, users are advised to ensure their phones
meet these requirements:

Pre-Requisites

Download USB drivers for Galaxy Nexus
Ensure back-up of all important data
Ensure battery has at least 80 percent charge
Ensure phone is factory unlocked
Ensure Nandroid backup of previous set-up

To Root Galaxy Nexus I9250 on Android 4.2 (JOP40C) Jelly Bean

Download Android SDK from Android Developers Web site and install. Set it up with downloading platform-tools and USB drivers package in SDK. Follow this tutorial to
see how to set up ADB and Fastboot on Windows
Enable USB debugging
Download Fastboot and extract in android-sdk-windowsplatform-tools directory

Note: Ignore above steps in case already present

Download SuperSU v0.97 (CWM-SuperSU-v0.97.zip) for Galaxy Nexus to computer
Connect device to computer using USB cable and copy CWM-SuperSU-v0.97.zip to SD card of device
Switch off device
Download CWM 6.0.1.0 (recovery-clockwork-touch-6.0.1.0-maguro.img) and save to android-sdk-windowsplatform-tools directory
Place device in Fastboot/Bootloader Mode, by pressing Volume Down and Power until text appears on screen; this is Bootloader Mode
Browse to android-sdk-windowsplatform-tools and open Command Prompt (Shift + Right Click > Open Command Prompt)
Now, type - fastboot flash recovery recovery-clockwork-touch-6.0.1.0-magu - and press Enter
Select Recovery from Fastboot menu and enter Recovery mode
In ClockWorkMod Recovery, use Volume keys and scroll to Flash Zip from SD Card and press Power button to select
Press Power once again and select Choose Zip from SD Card
Navigate to CWM-SuperSU-v0.97.zip using Volume buttons and press Power to select and confirm installation
After installation, return to main Recovery menu and select Reboot System Now; device will take about five minutes to reboot
The Galaxy Nexus I9250 is rooted on Android 4.2 JOP40C firmware and CWM Recovery is installed. This can be verified with the Superuser app in the app list. To ensure the root method has been successfully completed, verify with Root
Checker.