We of SamMobile would like to give you the latest I9300XXUFMB3 – Android 4.2.1 Jelly Bean test firmware for the Galaxy S III. Big Thanks to forum member Saturn from XDA-Developers who made this possible by giving us the dump files from his device.

Android 4.2.1 is still under testing phase by Samsung and they will release the official final Android 4.2.1 Jelly Bean update for the Galaxy S III after the launch of the Samsung Galaxy S IV. We wanted to give Samsung’s hardcore fans a sneak preview of what Samsung is up to in their dev center.

New enhancements in I9300XXUFMB3 FW:

– 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)

– Found more? Tell us about them in the comments below!

WARNINGS:

We have repackaged this firmware into an ODIN Flashable firmware ourselves from the dump files we took from Saturn’s device. This firmware will increase your binary counter, if you don’t know what this means then don’t flash this firmware. This Firmware will also change your device status to Modified. This firmware doesn’t contain any Modem so the Modem you are using before flashing this firmware will remain. This is a PRE-RELEASE version so not official from KIES. As this is a PRE-RELEASE firmware some minor bugs are to expect.

We have FULLY TESTED this firmware and this firmware works perfectly as any other official firmware.

Firmware Details

Android Version: 4.2.1 – JOP40D (Jelly Bean)

PDA: I9300XXUFMB3

CSC: I9300OJKFMB3

MODEM: N/A

Region: Middle East

Carrier: Unbranded

Changelist: 171637

Build Date: 19th February 2013

Download: I9300XXUFMB3_I9300OJKFMB3_ILO.zip

Flashing Instructions:

– Unzip the file

– Open Odin 3.04 (already included in the firmware package)

– Restart phone in download mode (Press and hold Home + Power + Volume down buttons)

– Connect phone and wait until you get a blue sign in Odin

– Add I9300XXUFMB3_I9300OJKFMB3_HOME.tar.md5 to PDA

– Make sure re-partition is NOT ticked

– Start flash, sit back and wait a few minutes.

– If you encounter any issues with the firmware (Any FC, Bootloop etc)

– Boot into recovery mode (Home+power+vol up)

– Choose to wipe/factory reset. (THIS WILL ERASE ALL OF YOUR DATA INCLUDING YOUR INTERNAL SD CARD!)

– Then choose reboot and you should be good to go!

Screenshots: