The Google LG Nexus 4 is one of the most popular and powerful Android based smartphones released in 2012 and being a Nexus handset its users can enjoy the latest and pure version of the Android system. But, for those who want to obtain more power from their device, a customized and optimized OS might be more recommended than the stock software. That’s why during the present step by step guide we will be checking in how to update the Google Nexus 4 with the Jelly Bean 4.2.1 based codefireX custom ROM firmware.
Since the Android 4.2.1 OS has been leaked, more and more custom ROMs powered by the same platform are being released for the Nexus 4, but not all the updates are being stable ones. Therefore, before deciding to install a software on your handset you should first ensure that you will not regret your decision afterwards. For that, read all the info related to the operation that you are about to perform and be sure that everything is working on the update that you are about to flash on your smartphone. If the codefireX Android 4.2.1 custom ROM will not be on your taste, then you can anytime update the LG Nexus 4 with other firmware, like the AOKP 4.2.1 (mako) or the MoDaCo Jelly Bean 4.2.1 operating systems.
According to our sources (those of xda-developers) this upgrade is not fully ready yet, so this is just the beta version of the codefireX system. This means that there are minor bugs and features that aren’t working properly so you will not get a stable Android 4.2.1 Jelly Bean OS for your Google Nexus 4. These issues will be removed and resolved as soon as a new version of the update will be released and provided for your device, but until then this is all you get. The software is coming with a new user interface, new themes, background images and with features that cannot be found in the default version of the Android platform; if you want the full list of features and also reported bugs, just check our source page from here.
Now if you have decided to complete this tutorial, then you should start the installation procedure by applying the pre requisites. In case you skip this section, your LG Nexus 4 will probably get bricked instead of updated to Android 4.2.1 with codefireX software, so don’t head straight to the upgrade operation.
- First of all (you should perform this task each time you are about to make changes on your phone) you must backup the Nexus 4 data. There are many ways in which you can save your personal info (you can use one of our backup and restore guides by checking out our how to section) so apply the one that you prefer the most.
- Also, if possible make a Nandroid backup before updating your smartphone.
- Then, unlock the bootloader of your device.
- Furthermore, root the Nexus 4.
- The warranty will get void; be careful in what you do and try not to mess things up. Always use suitable guides when trying to complete the up-mentioned operations or else you can brick your phone.
- In case you will want to restore the lost warranty, you will have to re-install the stock ROM or update to an official software (released by Google and LG for your Nexus 4).
- Install CWM recovery on your handset because without this tool we won’t be able to update your device to Android 4.2.1.
- On both computer and smartphone (a computer will be required) you must first deactivate the security settings.
- On your Nexus you should enable the USB debugging option.
- The battery of your phone should be charged (or make sure that there is enough battery life – minimum 60%).
- Install the Jelly Bean 4.2.1 codefireX custom ROM only if you own the LG Google Nexus 4 model number E960.
How to Update Google Nexus 4 with codefireX Android 4.2.1 Custom ROM Firmware
- Use the link from here and download the update file on your computer.
- Then use this link and download the Google Apps package.
- Connect the device with the computer.
- Copy the downloaded files (in step 1 and 2) from the computer to the phone.
- Unplug the USB cable.
- Turn off the Nexus 4.
- Reboot in recovery: press and hold the Volume Up, Volume Down, and Power buttons.
- Remember to make a Nandroid backup.
- Then, select “wipe data factory reset” and “wipe cache partition”.
- Select “+++go back+++” followed by “install zip from sd card” and “choose zip from sd card”.
- Pick the update file and install the same.
- Re-select “install zip from sd card” and “choose zip from sd card”.
- This time flash the Google Apps package.
- In the end select “+++go back+++” and “reboot system now”.
- That’s it.
Well, what do you think? Share your impressions related to the explained tutorial with us and with other users below, by using the comments area. Your Google LG Nexus 4 has been updated to Android 4.2.1 Jelly Bean with the codefireX custom ROM firmware, but be aware as there might be some issues and bugs in the system. So, test the same and stay close for further updates and tutorials.