Samsung has rolled out official XXBLL3 Android 4.1.2 firmware for Galaxy S3 I9305 which brings Premium Pack such as Multi view and Multi task. You can update to the official firmware via OTA or Kies Software. If you are unable to install official XXBLL3 Android 4.1.2 firmware for Galaxy S3 I9305 then go through the guide to install manually on your device.
Android 4.1.2 XXELL4 Firmware Features:
Android 4.1.2 – JZO54K
Multi-View (Multi-Windows Multitasking, same as in Note II)
New Gallery App (Same as in Note II)
Notification Panel (Notification Panel can now be customized)
Brightness Slider in Notification Panel Can Now Be Disabled
Smart Rotation (Screen Display adjusts to your angle of sightings)
Continues Input in Samsung Keyboard (Like Swipe or Android 4.2 Keyboard)
Paper Artist App
Group Cast App
Regions: UK, Spain, France, Germany, Austria, Hungary, Belgium, Italy
The guide mentioned below is only for Samsung Galaxy S3 I9305 and cannot be tried on any other device or variant. You can check device model by going to Settings >> About phone.
We cannot be held liable of any damage done to your device while following the below mentioned procedure.
Install XXBLL3 Android 4.1.2 firmware for 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 official XXBLL3 Android 4.1.2 firmware (I9305XXBLL3_I9305MOBBLL1_MOB.zip) and Odin (Odin307.zip).
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.
Click on Start button in Odin to start flashing Android 4.1.2 Jelly Bean firmware. When flashing is complete you will get a PASS message.
Disconnect device from your computer and let it boot automatically.
You have installed XXBLL3 Android 4.1.2 firmware for Galaxy S3 I9305.