Another official Over-The-Air (OTA) update, Android 4.1.2 Jelly Bean with base firmware XWLSU, has been released for Samsung's second generation Galaxy S series smartphone bearing model number GT-I9100. The new official build is for Orange subscribers in various countries such as Romania, Austria, France, Poland and Spain.

Samsung Galaxy S2
Android 4.1.2 XWLSU Jelly Bean update is available for Galaxy S2.

Firmware details

PDA: I9100XWLSU

Version: Android 4.1.2

Built date: May, 2013

Regions: Austria, Belgium, France, Germany, Hungary, Italy, Spain and United Kingdom

This is a carrier branded firmware and like other branded official firmware the latest build is not available over Samsung Kies. Users can connect the device to Wi-Fi and find the OTA update by navigating to Settings>> About device>> Software update.

Those who fail to find the OTA update for being region-specific may follow our step-by-step guide to install Android 4.1.2 XWLSU Jelly Bean manually using Odin flashing tool.

IBTimes UK reminds its readers that it will not be held liable for any damage to the device. Users are also advised to verify that their handsets meet the following requirements.

Pre-requisites

1) Install USB Driver for Samsung Galaxy S2 to connect the Android device with the computer.

2) Enable USB Debugging Mode on the phone to connect it with the computer and use Android SDK with it. [Press Menu>> Settings>> Applications. From there navigate and click on Development option and ensure the USB Debugging Mode is turned on.]

3) As the tutorial might wipe out all data of the phone, create a backup. If the device is having any custom recoveries such as CWM/TWRP already installed then backup data using the recovery.

4) The battery of Galaxy S2 should have above 80% charge.

5) The device should be factory unlocked and not locked to a particular carrier.

6) The phone will lose custom ROM with the installation of official firmware. Additionally, it will lose custom recovery such as ClockworkMod/TWRP which will be replaced by stock recovery.

7) The device will no longer belong to a rooted version with the installation of official firmware.

8) The Android 4.1.2 XWLSU Jelly Bean works only on Samsung Galaxy S2 GT-I9100. As flashing this on any other variant might brick the device, verify the model number of Galaxy device by navigating to Settings>> About Phone>> Model number.

Steps to install Android 4.1.2 XWLSU Jelly Bean on Samsung Galaxy S2 GT-I9100

Step-1: Download Android 4.1.2 XWLSU Jelly Bean official update for Samsung Galaxy S2 to the computer

Firmware download links: Android 4.1.2 XWLSU Jelly Bean (Poland)/ Android 4.1.2 XWLSU Jelly Bean (Spain) / Android 4.1.2 XWLSU Jelly Bean (France) / Android 4.1.2 XWLSU Jelly Bean (Austria) / Android 4.1.2 XWLSU Jelly Bean (Romania)

Step-2: Extract the downloaded zip file to get a file with .tar.md5 extension along with few other files

Step-3: Download Odin v3.07 which will help to install the Jelly Bean firmware on the phone. Extract the Odin zip file to get Odin3 v3.07.exe file with some other files

Step-4: Switch off the Galaxy S2. Now place the phone in Download Mode by pressing and holding the Volume Down and Home buttons together while pressing the Power button. A warning screen will appear, now press the Volume Up button to continue to enter Download Mode

Step-5: Run Odin3 v3.07.exe as an Administrator on the computer

Step-6: Connect the Galaxy S2 to the computer using USB cable while it is in the Download Mode. Wait until Odin detects the device. When the phone is connected, a message saying Added will appear under Odin's message box. Also, the successful connection will be indicated by the ID: COM box in Odin turning yellow with the COM port number

Note: If the Added message does not appear, then try the USB port at the back of the computer. In case that too does not work, then re-install USB driver.

Step-7: Select these files extracted from I9100XWLSU folder to install on the phone

a) Click the PDA button and select the .tar.md5 file

b) Click the Phone button and select file with Modem in its name

c) Click the CSC button and select file with CSC in its name

d) Click the PIT file and select the .pit file

Step-8: Ensure the Auto Reboot and F.Reset Time checkboxes are selected in Odin window. But uncheck the Re-Partition option, select it only when a .pit file is being used

Step-9: Double check everything and click the Start button in Odin. The installation process should begin now and would take few minutes to complete

Step-10: Upon the completion of the installation process, the phone will restart automatically. And soon a PASS message with green background will appear in the extreme left box at the very top of Odin indicating successful installation. When the home screen appears on the phone, unplug the USB cable from the device to disconnect it from the computer

Samsung Galaxy S2 should be now updated with Android 4.1.2 XWLSU Jelly Bean official firmware. Navigate to Settings>> About Phone to verify the new software version running on the device.

Fix bootloop issue

If the Galaxy S2 gets stuck at booting animation (after step-10), then put the phone into recovery mode by pressing and holding Volume Up, Home and Power buttons together. Now perform data wiping task by selecting Wipe data/factory reset, and then select Wipe Cache Partition. Once the action is completed, return to the main recovery menu and reboot the phone by selecting reboot system now. In recovery mode, use Volume keys to navigate between options and the Power button to select the desired option. Performing data wiping task will erase the internal memory data of the device.

Those who have already installed Android 4.1.2 XWLSU Jelly Bean on their devices, may follow our step-by-step guide to root the same.

Steps to root Samsung Galaxy S2 GT-I9100 on Android 4.1.2 XWLSU Jelly Bean

Step-1: Download Rooted Speed Kernel for Samsung Galaxy S2 to the computer

File name: speedmod-kernel-s2-jb-k5-3-Odin.tar

Step-2: Download Odin 3.07 and extract the downloaded zip to get Odin3 v3.07.exe along with few other files

Step-3: Switch off the Galaxy S2 and wait for about five to six seconds to confirm complete power off

Step-4: Boot the phone into Download Mode by pressing and holding Volume Down and Home buttons together while pressing the Power button. A warning screen will appear, then press the Volume Up button to enter Download Mode

Step-5: Run Odin3 v3.07.exe as an Administrator

Step-6: Connect the Galaxy S2 to the computer while it is in the Download Mode

Step-7: In Odin, click the PDA button and select speedmod-kernel-s2-jb-k5-3-Odin.tar file

Step-8: Verify that the Auto Reboot and F.Reset Time checkboxes are selected in Odin window. But uncheck the Re-Partition option

Step-9: Finally, click on the Start button in Odin to begin the installation

Step-10: Once the installation process is completed, the phone will reboot and soon a PASS message with green background will appear in the extreme left box at the very top of Odin. When the home screen appears on the phone, disconnect the device from the computer

Samsung Galaxy S2 running on official Android 4.1.2 XWLSU Jelly Bean should now be rooted successfully. Users may now install any app that requires root permission.

Click here for tutorial to install Android 4.1.2 XWLSW Jelly Bean on Samsung Galaxy S2 I9100.

[Source: Android Jinn]