Install Official XXBMB5 Android 4.1.2 Jelly Bean Firmware on Galaxy S3 I9305

I9305XXBMB5 Android 4.1.2 Jelly Bean firmware for Galaxy S3 I9305 is available for a download. The firmware update can be installed via Kies Software or you can go through the step by step tutorial mentioned below for manual installation. We will be using Odin to flash the firmware on Galaxy S3 I9305.

XXBMB5 Android 4.1.2 is an official firmware update, hence your device will lose root. You can always root your device later to enjoy apps which require root access.

Firmware Details:

Version: 4.1.2
Date: 2013 February

The guide mentioned below is only for Galaxy S3 I9305 and is not compatible with any other device. To know the model number of your device go to Settings >> About Phone.

Galaxy S3. 1

We cannot be held liable of any damage done to your device while following the below mentioned procedure.

Install official XXBMB5 Android 4.1.2 Jelly Bean firmware on Galaxy S3 I9305

Take a complete backup of data,apps and settings as the procedure may wipe your data.

Make sure that the battery of device has a minimum charge of 60%.

Enable “USB debugging” on your device by going to Settings >> Developer options >> Enable USB debugging.

Download Kies Software to install drivers.

Download XXBMB5 Android 4.1.2 firmware ( update on Galaxy S3 I9305 and Odin (

Extract the Firmware file which you have downloaded in above step. You will get “.tar” file along with other files.

Extract Odin to get “Odin3 v3.07.exe” file.

Switch off device.

Boot device into download mode. Press and hold Volume Down, Home, Power till device turns on and then press Volume Up to enter download mode.

Connect device to computer using USB cable. Odin will detect your device and ID:COM will turn yellow and a message appears saying “Added”. Re-install drivers if Odin fails to detect device.

Click on “PDA button” in Odin and navigate to select “.tar″ file which you have downloaded.

In Odin make sure that “Auto Reboot” and “F.Reset Time” are selected and “Re-Partition” check box is unchecked.

Click on Start button in Odin to start flashing Android 4.1.2 firmware. When flashing is complete you will get a PASS message.

Disconnect device from your computer and let it boot automatically.

XXBMB5 Android 4.1.2 firmware for Galaxy S3 I9305 is installed. You can check firmware version by going to Settings >> About Phone.

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