Update Galaxy S3 I9300 with C-ROM Android 4.4.4 KitKat Firmware

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The new C-ROM custom ROM firmware based on Android 4.4.4 KitKat OS is here so if you are planning in updating your Galaxy S3 with an unofficial software, then this new platform will be perfect for you. Now if you don’t know how to safely update your Galaxy S3 to Android 4.4.4 KitKat OS using a custom ROM, then follow the guidelines from below as I will teach you how to quickly flash C-ROM firmware on your device and also I will also show you how to avoid unpleasant situations while doing the same.

First of all, it should be clear for you that this tutorial is complex and risky. Updating with a custom ROM implies in using a manual installation procedure, so you cannot OTA flash Android 4.4.4 KitKat C-ROM system on your Galaxy S3. Moreover, the firmware isn’t an official release of KitKat OS and the same has nothing to do with Samsung or Google. The firmware is developed by third party devs and represents just another free distributed version of Android 4.4.4 KitKat software that is only based on stock OS and which is of course compatible with the I9300 model of the Samsung Galaxy S3.

Since this is not an official update, by installing C-ROM on Galaxy S3 you will lose the warranty of your smartphone. Basically if you somehow manage to soft brick or damage your device in any matter, returning it back to service will imply in paying for the technical assistance – or, of course you can try to fix your Android device by yourself, by using dedicated tutorials, like the one from here. In case you are not confortable about the warranty aspect, maybe the best will be to stop from going any further – nothing bad happens if you stick to the guidelines from below though.

Now, the latest release of C-ROM brings a stable and fast Android 4.4.4 KitKat OS for your Galaxy S3. The firmware will smoothly run on your device and you will not experience bugs, lags, force close errors, alerts or other issues. Moreover, with C-ROM installed your SGS3 will run faster and better as there will be installed various features that cannot be found on the default version of Android 4.4.4 KitKat OS. These features can power up the performances of your device, improve the battery life, personalize the looks, optimize the power and change the Android experience for providing a great UI.

If you want to experience all that on your Galaxy S3, then don’t hesitate and complete this step by step guide. But before heading to the proper steps from below, apply a backup and save all your data which is there on the internal storage memory of your smartphone. A backup is required because a wipe will have to be applied in order to make things right. So, for ensuring that your personal data, info and accounts are in safe hands, you should first use compatible backup apps or cloud services (in that matter you can also save your contacts, call logs, text messages, EFS folder, market apps, images, videos or audio files). It will be great to save your current ROM too by making a Nandroid backup as in this way you can be sure that nothing bad happens.

Moreover, if you want to safely complete this guide you must first root your Galaxy S3 and install a custom recovery image such as CWM or TWRP recovery into its system. The root access is required because that’s how you can easily unlock the Android system and the custom recovery image is a must because the same will be used on the flashing process.

On the other hand, you will have to download the update file on a computer so make sure you can use one. In order to avoid unpleasant situations, it is indicated to temporarily deactivate the security protection from your computer and to enable the USB debugging option on your phone (do that by going towards “menu – settings – developer options”). Also the best will be to charge your S3 before doing anything else (do that especially if the power level is less than 50%) – if your phone gets turned off while you are trying to complete the update operation, your Galaxy S3 might also get bricked.

Apply the steps from below only if you own the I9300 model of the Samsung Galaxy S3. The Android 4.4.4 KitKat C-ROM firmware file that is provided here is being compatible only with the mentioned Android based device so try not to mess things up.

How to Update Galaxy S3 I9300 with C-ROM Android 4.4.4 KitKat Firmware

  1. From here you need to download the update file on your computer; place the same on desktop without unzipping it.
  2. Establish a connection between your Galaxy S3 and your computer via USB cord.
  3. Transfer the downloaded file from desktop to your phone’s SD card.
  4. Remove the USB cable and turn off your device.
  5. Enter recovery mode on your Samsung Galaxy S3.
  6. Wipe the data and clear cache by using the recovery mode menu; do that by selecting “wipe data factory reset”, “wipe cache partition” and “wipe dalvick cache”.
  7. Return to main menu of recovery and this time choose “install zip from SD card” followed by “choose zip from SD card”.
  8. Pick the C-ROM KitKat 4.4.4 custom ROM and flash the same on your SGS3.
  9. In the end, from recovery you just have to select “reboot system now” and you are done.

Congratulations; you have successfully updated your Samsung Galaxy S3 to Android 4.4.4 KitKat OS by installing C-ROM custom ROM firmware. That was all for today; don’t forget to test the new software and to feedback us by using the comments field from below. If there are problems or if you have questions we will try to assist and help you as soon as possible.

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