Google will release the new Jelly Bean 4.1 operating system for Android in July, but they still decided that the Galaxy Nexus should receive it much sooner and here, in this post, you can find instructions on how to successfully update the Galaxy Nexus to Android 4.1 Jelly Bean manually instead of waiting for the OTA firmware release.
Google’s IO conference started yesterday and it already brings great news and announcements for Android users, such as the release of Android new OS, Jelly Bean 4.1, which will be available starting with mid-July for Google’s future Nexus 7 tablet, Nexus S and Motorola XOOM. However, Jelly Bean might be released for these devices also and you should return to our website to learn how to install it without damaging your device.
The Android 4.1 Jelly Bean was released by those who were present at the Google IO conference as they received a free Galaxy Nexus device running Android’s latest firwmare. Now, if you’re one user that didn’t had the chance to go to Google IO, you can still enjoy Jelly Bean by installing its ROM on your own Galaxy Nexus device using the steps listed in our tutorial guide. If you don’t want to install it manually with our method, then you should know that you need to wait until mid-July until Google releases officially the Jelly Bean 4.1 OTA update for GNex devices.
Before we can move to the tutorial guide you should read the guidelines I’ve listed in the preparation guide. You will learn how to correctly prepare your device so that you will manage to install the update at your first attempt. Here’s what you need to know:
- Android 4.1 Jelly Bean can be installed only on the Galaxy Nexus International GSM model number I9250. Do not attempt to install it on Verizon, Sprint or CDMA devices or on any other devices with a different model version.
- The phone should be rooted. How to root guide here. For those of you who already applied root on your devices, this step should skipped.
- Your Galaxy Nexus should have CWM Recovery installed. How to install CWM Recovery guide here. Skip this in case your device already has CWM Recovery installed.
- Unlock the device’s bootloader prior to the installation of Jelly Bean Android 4.1. How to unlock Galaxy Nexus bootloader here.
- enable USB debugging on your smartphone.
- Make sure to charge your phone battery until it reaches at least 70% in power levels and this will prevent it from switching off during the update.
- The tutorial features a step that tells you to wipe all data, action which requires you to backup all the important files. You can move them on your device’s internal or external sdcard, as these won’t be changed during the update process. An alternative method would be to move the files on your PC using the USB connection cable.
- The SMS text messages, installed applications, Call Logs info and the APN Settings can be backed up using these Android based applications: AppBAK for Android apps backups | SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore.
- To save your Phone Contacts you will need to sync them with your Gmail account. Here’s a guide here.
- Those of you who are skeptical about this update, as whether it will run smoothly or not, should create a full backup of your current installed ROM. You can do it using CWM recovery, CWM Manager, ROM manager, ROM Toolbox Lite and other similar applications that are available from Google’s Play Store.
- Note that you’re installing the new update at your own risk and you shouldn’t try to apply the changes if you’re a beginner when it comes to rooting Galaxy Nexus, flashing custom recovery images or updating its firmware. Make sure that you read all the steps listed in the tutorial and in case you can’t understand what I’m telling you to do, then please use the comments to ask for my help.
Now that you’ve read and understood what actions you need to take, then you should move to the tutorial and update your smartphone with Android’s latest OS, 4.1 Jelly Bean. Remember that you can install it only on the International GSM version of Galaxy Nexus, so you shouldn’t try to apply it on any other devices. Those of you who don’t want to use this manual update tutorial should wait until Google roles out the OTA update for your smartphone.
How to update Galaxy Nexus to Android 4.1 Jelly Bean:
- Download the Jelly Bean Android 4.1 ROM from here.
- Download ‘root and superuser fix’ from here.
- Connect your Galaxy Nexus to your PC and move the files downloaded at the steps above on your phone’s internal sdcard. Do not extract their contents.
- Power OFF the phone.
- Boot into CWM Recovery by pressing and holding simultaneously these buttons: volume up + volume down + power. Release them only when the screen powers ON.
- Use the volume buttons to navigate and ‘power button’ to select the ‘Restart Recovery option. This will reboot your device into CWM recovery.
- Select the ‘wipe data/ factory reset’ option and then confirm that you wish to wipe all data. Note that this action will delete all apps and settings, while the sd card content will remain unchanged, which is why I told you to move all other files on it.
- Next, select ‘install zip from sdcard’ and from the next screen select ‘choose zip from sdcard’.
- Find the ‘bigxie_JRN84D_rooted_busybox_deodexed.zip’ ROM package file and confirm that you want to flash it on your Galaxy Nexus. Wait until the ROM is flashed and then move to the next step.
- Select again ‘choose zip from sdcard’. Find the ‘cwm supersu’ zip file. Confirm that you wish to install it.
- Now, since both zip files were installed you can back to CWM recovery main screen.
- Select ‘reboot system now’ and now your Galaxy Nexus will start its first boot into Android 4.1 Jelly Bean ROM. Please note that this process might take some time before completion and you simply need to wait.
- Enter your Google account details when the phone loads successfully the Android 4.1 Jelly Bean. That’s it, now your device is running on Google’s latest Android firmware release.
In case your device goes into a boot loop or the first boot process takes too long to complete, then it means that it was bricked and you will have to repeat the entire update process once again. This time make sure that you read and apply all the steps I’ve listed in the ‘how to update Galaxy Nexus to Android 4.1 Jelly Bean’ guide.
If you managed to install Jelly Bean on your Galaxy Nexus then you should tell us in comments if you’re content with how it runs and what new features impressed you the most. Also, if you have any other questions regarding Galaxy Nexus and Android 4.1 Jelly Bean, then please let us know by leaving a comment and we will answer all of them.