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Galaxy S2 Android 4.1.2 Jelly Bean I9100XXLSJ Firmware Update Leaks – Installation

Last month Samsung said that they’ll release the Jelly bean update soon for the Samsung Galaxy S2 and now seems true on  words and we’re closer to Galaxy S2 Jelly Bean update release because Galaxy S2 has just received a leaked Android 4.1.2 Jelly Bean firmware – I9100XXLSJ, thanks to XDA developer member izap.

It’s alpha Jelly Bean firmware for the Galaxy S2 but it reportedly works fine and it’s very stable, even as I said that XXLSJ firmware is based on Android 4.1.2 instead of Android 4.1.1, which suggest us that Samsung has skipped the Android 4.1.1 and is going to update Galaxy S2 directly to Android 4.1.2. Since this is very stable build, hopefully Galaxy S2 will receive official Jelly Bean update in a few days.

This new firmware comes with a lot of improvements such as smooth performance, new TouchWiz Nature UX (it has been used in Galaxy S3 and Galaxy Note 2), cloud service, new widgets, tow home screen modes, improved notification bar, Google Now and more. So if you’re interested, follow the below guide to learn how to install Android 4.1.2 Jelly Bean I9100XXLSJ firmware for Galaxy S2 I9100.

You need a Windows PC with USB phone drivers installed, you can download drivers from here or here. Be sure to make a backup of your device data such as SMS, internet setting, contacts music files etc because the below procedure may wipe data, you can sync your contacts with Gmail account and for messages use SMS apps, lastly use file expert app to backup apps.

DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or gets damaged following this guide.


Step #1: Download the Android 4.1.2 I9100XXLSJ firmware from here (File name:

Step #2: Unzip the downloaded .zip file into a folder, it will extract three following files:

  • I9100XXLSJ_ I9100OXXLS1_I9100XXLS6_HOME.tar – firmware file
  • I9100XXLS6 – the modem file
  • I9100OXXLS1 – the CSC file

Step #3: Download Odin to your PC and unzip it into a folder too.

Step #4: Open the folder where you’ve unzipped above file and run Odin3 v1.85.exe.

Step #5: Turn the device off.

Step #6: Reboot the device into download mode, to do so reboot phone by holding down volume down, home and power buttons until a warning screen appear, then press volume up button to enter in download mode.

Step #7: Once you’re in download mode plug the device to PC using USB cable. Odin will detect the device, ID:COM will turn yellow and a message saying ADDED will appear. (Note: If Odin doesn’t detect the device, make sure that USB drivers are properly installed on your computer).

Step #8: Click on PDA Button and locate I9100XXLSJ_ I9100OXXLS1_I9100XXLS6_HOME.tar from the folder where you’ve unzipped above files in the step 2, then click on Phone button and locate I9100XXLS6 modem file and then click on CSC button to locate I9100XXLS CSC file (Note: Don’t make any change, just make sure that re-partition is unchecked).

Step #9: Click on Start button to start installation, once the installation done, your device will reboot itself and you’ll see message saying PASS (Note: If Odin refuse to install the update and show message FAIL, or get stuck, close the Odin and unplug device, then pull out battery from the device for a few seconds. Then put the battery back to the device and reboot into download mode. Then install the firmware again.

Step #10: Unplug the phone from PC.

That’s it, you’re done, your Galaxy S2 is now running Android 4.1.2.

Via: XDA

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