Xperia S is still a great Android based device and even though its specs and features might be a little bit outdated, the phone is providing decent performances to its users. The best is that now you can do better as you can choose to improve the performances of your Sony Xperia S. How to do it? Well, this is quite easy as all you have to do is to complete this step by step guide which will teach you how to install the new OmiROM firmware – based on Android 4.3.1 Jelly Bean OS – on your Android device.

OmniROM is a custom update that is based on stock Android 4.3.1 Jelly Bean OS. The same has been made available for the Sony Xperia S, so that’s why we are bringing you this dedicated step by step guide. But before starting the proper update operation you should first learn more details related to this update and also on how to properly prepare your Android device for the installation procedure that will follow. So, if you have decided to update your Xperia S to JB 4.3.1, don’t hesitate and follow the guidelines from below.

First of all you need to know that OmniROM has been developed by third party devs; furthermore the xda-developers team are being behind of this Android 4.3.1 update, so we should thanks them for this tutorial. Therefore, OmniROM is nothing but a free aftermarket distribution of Android 4.3.1 system that is available and compatible with your Xperia S. In order to conclude, this operation isn’t official the same being applied for the present update – it has nothing to do with Sony or with Google.

Considering the up mentioned aspects you need to know that: OmniROM can be flashed only after applying the pre requisites from below and that by using this step by step guide the warranty of your Sony Xperia S will get void. The warranty can be restored only by downgrading / updating your phone to stock / official Android OS – only manually as the official Android firmware can’t be OTA applied on devices installed with a custom ROM.

Now, OmniROM comes with features and capabilities that cannot be found on the default version of Jelly Bean OS. Furthermore, the software is coming with its own user interface so you will not install the pure Android 4.3.1 UI on your Xperia S. Also, with this firmware you will be able to customize, optimize and improve the performances of your Android device. In a few words, once this guide is completed you will be able to gain more speed, receive more power, enjoy an improved battery life and use a better web browsing experience. Furthermore, you will have access to the internal system of your smartphone for performing other operations like overclocking the CPU frequency or removing the bloatware.

In order to use the steps from below, first you will have to root your Xperia S. Gain root access because a custom ROM, such as OmniROM can be installed only on an unchained system. Then, after gaining root access install a custom recovery image on your Sony Xperia S. The stock recovery can be used when applying unofficial updates, so get a custom one. Final tip: use the latest version of CWM or TWRP recovery if you want to avoid the unpleasant situations. Do note that a custom recovery image can be applied only on a rooted Android device.

Up next, as only a recommendation, you should backup the Sony Xperia S data before going any further. In order to make things right and for safely installing Android 4.3.1 Jelly Bean based OmniROM on your phone a wipe will be first required; and by wiping the system your personal data, info and accounts will be erased. So, if you have something important saved on the internal storage memory of your phone the best will be to use suitable backup and restore apps for keeping your data in safe hands – don’t forget to make a Nandroid backup on your way for saving the current ROM too.

Since this is a manual update operation, for being able to complete the tutorial a computer or notebook will be required. Furthermore, your Sony Xperia S and its USB cord must be near you as you will have to establish a connection between the PC and your smartphone. Also, on both Xperia S and computer you have to deactivate the security protection because the antivirus programs might interfere with the update operation. Furthermore, you phone must have at least 50% power left; if not you first have to plug in the charger. Don’t forget that this step by step guide is compatible only with the Sony Xperia S and with no other Android based device.

How to Update Xperia S to Android 4.3.1 JB with OmiROM Custom ROM Firmware

  1. Download the OmniROM Android 4.3.1 JB firmware file from here.
  2. Download Google apps package from here.
  3. Place these files on your computer and then connect your Sony Xperia S with the same.
  4. Don’t unzip the downloaded files.
  5. Now transfer both files from your computer on your phone’s SD card.
  6. Remove the USB cable after transferring the files.
  7. Turn off your phone.
  8. Reboot in recovery mode.
  9. From recovery select “wipe data factory reset”, “wipe cache partition” and “wipe dalvick cache”.
  10. Then from the same recovery mode menu select “install zip from SD card” and “choose zip from SD card”.
  11. Pick the Android 4.3.1 firmware file and install the OmniROM OS on your Xperia S.
  12. Also flash Google apps package.
  13. Then return to main menu of recovery.
  14. Select “reboot system now”.
  15. Done.

Good job; you have successfully updated your Sony Xperia S to Android 4.3.1 Jelly Bean software. Remember that this update is not official so you have flashed only a ported variant of the JB firmware. OmniROM is a custom ROM that comes with its own features, apps and capabilities, so test the same in order to see how it performs on your device. Also, if there are bugs or things that aren’t running as smoothly as expected, use the comments field from below and share the same with us.

lali · 4 years ago

i did everything as you sad but after reboot my phone didnt turn on not even light
whad could happen?

vineeth · 4 years ago

can this process be used for the SL as well?

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