Install XXUFMB3 Android 4.2.1 Jelly Bean Test Firmware on Galaxy S 3 19300

I9300XXUFMB3 Android 4.2.1 Jelly Bean test firmware for Galaxy S 3 19300 is available for a download. This is an official leaked firmware by Sammobile which will possibly be released by Samsung with the launch of Galaxy S 4. We will be going through the tutorial to download XXUFMB3 Android 4.2.1 on Galaxy S 3 19300, the firmware cannot be downloaded via Kies Software as it a test firmware. Firmware may have few bugs and issues.

Firmware features:

New enhancements in I9300XXUFMB3:
– Android 4.2.1 – JOP40D
– Improved Ripple effect on Lockscreen
– New Android 4.2.1 Lockscreen with widgets
– Daydream (Settings>Display)
– New Additions in Notification Center
– Notifications are more actionable
– Voice Command (Let’s you control various parts of the phone using voice commands)

Firmware Details
Android Version: 4.2.1 – JOP40D (Jelly Bean)
Region: Middle East
Carrier: Unbranded
Changelist: 171637
Build Date: 19th February 2013

The guide mentioned below is only for Galaxy S 3 19300 and is not compatible with any other device. To know the model number of your device go to Settings >> About Phone.

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

Galaxy S3. 1

Install official XXUFMB3 Android 4.2.1 Jelly Bean test firmware on Galaxy S 3 19300

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 XXUFMB3 Android 4.2.1 firmware ( update on Galaxy S 3 19300 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 4.2.1 firmware. When flashing is complete you will get a PASS message.

Disconnect device from your computer and let it boot automatically.

XXUFMB3 Android 4.2.1 Jelly Bean test firmware on Galaxy S 3 19300 is installed. You can check firmware version by going to Settings >> About Phone.


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