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Update Galaxy S3 GT I9300 with Omega v12 (latest) Custom ROM firmware How to Tutorial

By Techno Addicts on Wednesday, 15 August 2012 0 comments

S3 GT I9300 owners and lovers, now we present to you the Omega v12 custom Rom firmware arrived and comes along with stable firmware version dubbed as XXBLG9. This firmware got a lot of new and advance features, which includes the ff: all stock applications-plus: , Flipboard ( latest version), google maps ( latest ), play store v3.7.15, S nemo, modem XXLH1, kernel stock XXLG9, efs backup, clockworkmod recovery 5.5.04. v1.5, CWM manager v3.6, Busybox v1.20.2, and etc. This is the unofficial version, as of now there is no ETA on when will the official version of jellybean 4.1.1 firmware be released. Below I will give you the step by step procedure on how to update galaxy S3 GT I9300 with latest omega v12 custom rom firmware.

Disclamer : This site will not be responsible for anything damages or data loss to your device. This site is only for information purposes only.We have instructions below follow step by step proccess to have a successful installation without causing problems. Proceed at your own risk.


1. Your Samsung Galaxy S3 GT I9300 device must be rooted before applying this firmware.

2. Back up your important data's such as SMS, Contacts, Call logs, Images APN Settings and etc.

3. Now enable USB Debugging mode in your Device, do this by going to settings>applications>development>USB debugging.

4. The battery life of your device should not be less than 60%. to finish the update without turning your device off.

Now here are the step by step guide/procedure on how to update Samsung Galaxy S3 GT I9300 with the latest Omega v12.0 Custom ROM Firmware:

1. Let's start, first download omega 12 custom rom firmware package here.

2. After downloading, connect your Device Galaxy S3 GT I9300 to your computer using your USB cable and put the downloaded zip files in your device.

3. Disconnect your device from the computer.

4. Turn off your device to enter recovery mode.

5. Now enter to Recovery mode by pressing volume up button + home key button while holding both simultaneously press the Power Button. 

6. In recovery mode select wipe data/factory reset. You also need to select wipe cache partition. Additionlly, select "advanced" and clear the Davlik cache if you are on the custom rom firmware. ( You can also enter into recovery mode with the help of CWM  application in ROM Manager app.)

7. Choose install zip from sd card > select zip from internal sd card and select the downloaded omega 12 custom rom firmware package you put in your S3 device.

8. Check if your firmware update is successful or not. Do this by going to Settings > about phone.

Congratulations! You have updated successfully your Galaxy S3 GT I9300 with Latest Omega v12 custom rom firmware. Enjoy!

Category: android , droid apps , samsung s3


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