How to Update Galaxy Nexus with IMM76I Firmware that Fixes the Signal Issues

Galaxy Nexus

There a couple of smartphone manufactures out there that try to keep updates rolling for their devices, but none have been as successful as Google in this matter. The standard to beat right now for the quickness on updates is the Galaxy Nexus, which always receives lightning speed OTA updates thanks to its stats as latest and greatest Google Android smartphone. Just a couple of weeks after the last update, Google has begun seeding the Android 4.0.4 IMM76I firmware update, that should finally bring a stop to all of you signal issue problems. The update also bring some much needed performance improvements, an increased stability and the aforementioned Wi Fi and HSPA signal issue fixes.

As an OTA update, this particular IMM76I firmware should reach your GSM version of the Galaxy Nexus in the very near future, but as the rolling out process is usually done in steps you might want to apply the update as soon as possible. The update is only 708 KB in size, so you should be able to download it even on your 3G connection. There are a couple of way you can apply this update, so the purpose of this guide is to make them crystal clear and very user friendly.

Before we go any further, there is also the matter of a disclaimer notice we should inform you about: This software is not our creation so we must warn you that you cannot hold us responsible for any damage that might occur to your device by following the procedures in this guide. However, we will try to help you sort out any glitches or problems that might arise by following the steps in this guide to the extent our knowledge limits us. By all means, the IMM76I update is an official one from Google and if you experience any trouble while applying it as an OTA update you should return your smartphone to your warranty center immediately.

With this in mind we should be moving on to the first half of our guide, the one which covers the requirements that need to be met before updating. Although the IMM76I is a minor update, we still recommend backing up your data and we have included some third party apps and procedures in the short list below:

  • You must make sure that your Galaxy Nexus is already running the IMM76D firmware. It doesn’t matter if your device is rooted or not as long as it has this firmware version.
  • Next up you should ensure that your Galaxy Nexus is charged to at least 50% of its battery capacity in order to prevent an accidental shut down during the updating process.
  • You can only apply this update on the unlocked GSM version of the Galaxy Nexus, which bears the model number i9250.
  • Text messages – We will back them up with the following application : SMS Backup & Restore
  • Phone Contacts –  You can simply synchronize them to your Gmail account or export them to the micro SD card as a .vcf file
  • Call Log – We will use the following application to backup your call log : Call Log Backup and Restore
  • Pictures, Music, Videos, and other files – Simply copy them to your microSD card.
  • Internet & MMS Settings – Write down all the settings from this path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names”

Next up is the first and the easiest way for you to apply the update to your Galaxy Nexus, the OTA method:

  • The first step is to check if the update has been made available to your device by going to Settings -> About Phone -> System updates. If you see that the IMM76I is available you can move on to step two.
  • In this step you will have to download the update to your Galaxy Nexus and then simply select the Restart and install option in the bottom right corner, just like in the screen shot below.
Galaxy Nexus OTA Update

Galaxy Nexus OTA Update

  • Once you have selected that option, your Nexus will restart and it will apply the update. This should not take more than 5 minutes, and it will all be complete when your device will reboot to your PIN screen.

If your Galaxy Nexus doesn’t offer the downloading and installing options, you will have to check out the next part of our guide. This next part is going to show you a safe and easy way of manually installing the IMM76I update via a custom recovery. This means that you can only follow the second method safely if your Galaxy Nexus is already rooted and running the Clockwork Mod custom Recovery.

  • The first step in the second part is to download the IMM76I Update Zip Package to your computer.
  • After doing so you will have to enable the USB debugging option. You can do so from this path: Settings Developer Options > Development > USB debugging.
  • Next up you will have to transfer the downloaded IMM76I Zip file to the root of your Galaxy Nexus’s internal memory card. Do not place it into any sub folders as you will have a harder time finding it later.
  • In this next step you will have to reboot your Nexus into Clockwork Mod Recovery, and this can be done by pressing and holding the Volume Up and Volume Down Keys and then simply pressing the Power Key after the device has been shut down. After this you will simply have to select the Recovery Mode option and wait for it to load.
  • Since you are now in the ClockworkMod Recovery you should also do a nandroid backup, since it will save a copy of your already working software. To do this backup you will need to select the following options from the main menu of the recovery: Backup and Restore -> Backup.
  • In this step you will actually be applying the IMM76I update. In order to do so you will have to select the following options from the main menu of the Clockwork Mod recovery: Install zip from sd card -> Choose zip from sd card. After doing so you will have to navigate to the IMM76I Zip archive you have previously placed on the internal memory card and select it. The updating process should now start its job.
  • In this last step you will just have to wait for the process to complete, and it shouldn’t take longer than 2 to 5 minutes. Once it is done, you will have to press the back key on your device and go to the main menu of the recover. From here you will simply have to select the Reboot now option.

The first boot after the update may take a while longer than a usual one, but do not be alarmed as this is a normal thing due to the tinkering the new update has to do to your current software. If you happen to get stuck on in the booting phase for more than 30 minutes you will have to pull out your Galaxy Nexus’s battery and restart the second part of our guide all over again. This problem should not occur if you have chosen the OTA update method. In case you get stuck you should also try restoring that nandroid backup you made earlier and restart the procedure after doing so.

If everything went all right you should now be the proud owner of a very up to date Galaxy Nexus, which should now be free of any bugs of issues. You can check if the update has been successful by going to: Settings -> About phone -> Software information and looking for the IMM76I code. Please feel free to leave us your feedback in the comments section below.

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