Tag Archives: ICS

GUIDE: Update your Galaxy Nexus from ‘Yakjuux’ build straight to ‘yakju’ Jelly Bean 4.1.1


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Finally!!! I have finally updated my old guide and edited it to now make a new guide on how to update your ‘Yakjuux’ build Galaxy Nexus to the new ‘Yakju’ build running the latest version of Android, Jelly Bean 4.1.1. I have left the old guide up for those who want to be able to get the update OTA from Google, but if you choose to bypass the OTA and go straight to the latest version, this is the guide for you. I have left all the old information regarding what the ‘Yakjuux’ and ‘Yakju’ builds are for new users who may not have seen the old post so skip down to the bottom for the instructions. I will also be adding a FAQ section soon as I have received many of the same questions and will save you some time even though most of the questions are answered in this post.

So you’ve purchased a new Galaxy Nexus phone from Rogers, Telus, Fido, Bell, AT&T or any other GSM  with hopes of having the latest updated; it turns out that there are two different builds, ‘yakjuux’ and ‘yakju’. The main differences between these two builds is that the ‘yakjuux’ build is pushed out by Samsung and the Yakju build is pushed directly from Google.  The benefit from having the ‘yakju’ build is that you will receive the updates much faster as they are being pushed from Google directly.

The current pushed versions of Ice Cream Sandwich:

YAKJUUX – 4.0.2

YAKJU      – 4.1.1 (JRO03C)

In this tutorial, I am going to show you how to update your build from the ‘yakjuux’ to ‘yakju’ build of Jelly Bean 4.1.1 on Mac OS X. I am using OS X lion 10.7.3.

Disclaimer: I take no responsibility for any damages you incur to your phone by updating. I am merely writing a how-to guide and everything is done at your own risk.

Make sure you backup anything on your phone as this process will wipe everything.

First you will need to download the fastboot file which is located inside the ‘Nexus’ folder. That file can be downloaded https://www.dropbox.com/s/lkaey1tajd0ttnx/Nexus.zip

You will want to place the Nexus folder onto the desktop as the commands below require it.

Inside the “Nexus” folder, you will find the file “fastboot”. Open this up the way you would an application and let is run. It will ‘install’ whats needed. If you don’t, you will receive a permission denied reply when you try to run the fast boot commands.

Next, download the Factory Image for Android 4.1.1 here: Link

You will want to download UnRarX in order to extract the Android 4.1.1 tgz file. Once you are ready to extract the file, extract the contents to the ‘Nexus’ folder located on the desktop.

Next download the Android File Transfer software for mac from http://www.android.com/filetransfer/ and install.

At this point, you should have everything extracted into the ‘Nexus’ folder on the Desktop and we are ready to start the process.

We are going to start by unlocking the boot loader. This is needed so that we can install the ‘yakju’ image files. Note: This is not the same thing as rooting your phone.

First you are going to want to plug-in your Nexus and make sure that the Android File transfer recognizes the phone. If it does, power down the phone with it still being connected to the computer.

Next, boot the phone into recovery mode. To do this, power down the phone and restart it by holding the power and volume up/down buttons until you see the recovery screen.

Next, we will unlock the Bootloader. To do this, open up Terminal(located in your Applications->Utilities folder)and type the following commands.

1.) cd ~/desktop/Nexus        (hit enter after typing each one if these commands)

2.) ./fastboot devices

If everything is installed correctly, you should see xxxxxxxxxx fastboot(the numbers represent your serial number)

3.) ./fastboot oem unlock

4.)Your phone will ask you if you want to unlock the bootloader. Use the volume up button to ‘yes’ and select it by pressing the power button.

NOTE: THIS WILL ERASE ALL DATA ON YOUR PHONE. Your bootloader is now unlocked.

Next we will install the new files:

5.)type ./fastboot flash bootloader bootloader-maguro-primelc03.img

6.) type ./fastboot reboot-bootloader

7.) type ./fastboot flash radio radio-maguro-i9250xxlf1.img

8.) type ./fastboot reboot-bootloader

9.) type ./fastboot -w update image-yakju-jro03c.zip

At this point, the phone will automatically restart. Once the phone has booted to the factory startup screen, power down again and and boot into recovery mode.

We are going to now re-lock the bootloader. Keep in mind that if you choose to lock it and want to update to a future version, you will need to re-unlock it and thus erase everything again. If you decide that you need to send it in for warranty, you will want to re-lock it.

To lock the bootloader:

In the Terminal, type the following:

1.) type ./fastboot devices

2.) type ./fastboot oem lock

Your bootloader is now locked again.

3.) ./fastboot reboot

Your phone is now updated to the latest firmware, Android 4.1.1 Jelly Bean. As well, you will now also be able to receive the future OTA updates directly from Google.

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Galaxy Nexus Yakjuux to Jelly Bean 4.1 guide coming soon…


Wow, the page views have exploded over the past few days. I never would have guessed that I would get such a positive response to what I thought was ‘just another guide’. Thank you all for the comments on if its helped you or anyone else. Anyway, I’ve been getting a lot of post/emails about making a update guide similar to my Yakjuux to Yakju guide, but for Jelly Bean. Once the factory image for Jelly Bean is released, I will make a new guide and upload the proper files for you to install. If you haven’t subscribed to my blog or followed me on Google+ or Twitter, be sure to as I will post updates there about where I’m at with things.Image

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Google updates new 4.0.4 ‘takju’ build…


Google has added a new build to their factory images page with a 4.0.4 ‘takju’ build. What is this new build you ask? It’s really nothing more than the 4.0.4 IMM76I ‘yakju’ build, but includes Google Wallet in the applications. This is the current build that is being included with the newly released unlocked Galaxy Nexus you can purchase at the Google Play Store(sorry, US customers only at the moment).

What does this mean for us Canadians – can we install the build in hopes of getting Google Wallet? Short answer, no. Currently there is no support for Google Wallet in Canada, even though there has been talks for months about bringing the mobile payment service to Canada in 2012.

Will you get updates any sooner with the ‘takju’ build vs the ‘yakju’ build? Doubtful, being there are no major differences.

I will keep you updated if there are any changes, but for now if your on the 4.0.4 IMM76I ‘yakju’ build, there is no real reason to update.

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Android 4.0.4 build IMM76I now out!


ImageGoogle has released the full image for Android 4.0.4, build IMM76I. You can get it here: https://developers.google.com/android/nexus/images

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IMM76I update received


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Just received the newest OTA update from Google this afternoon, IMM76I. For those wondering, my Nexus was purchased from Rogers Wireless and I’m in Canada. Check out my guide for installing the 4.0.4 update so you can get future updates from Google. U

The update seems to have fixed the sleep/signal loss issue as well as the lag from the unlock while having your brightness settings on auto. I will update if I find more.

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