Update Galaxy S2 I9100 to Android 4.1.2 XWLST Jelly Bean firmware. Back in April 2013, Samsung officially rolled out the Android 4.1.2 XWLST Jelly Bean firmware update especially for Samsung Galaxy S2 GT-I9100 smartphone. Unfortunately Samsung released this firmware update through Samsung Kies and OTA (Over The Air) only in limited regions. To overcome with this, we have come up with a complete step by step tutorial for manually flashing this Android 4.1.2 XWLST Jelly Bean based firmware on your Galaxy S2 GT-I9100 device.

Since many android users claimed that the earlier official builds had much bugs and glitches, Samsung rolled out this XWLST firmware in order to provide a completely stable and bug free stock ROM. In this article we have discussed about the Indian version of this firmware. But don’t worry you can still install this firmware as long as your device model number is GT-I9100. Lets look at the complete firmware info and the easy steps guide mentioned below on how to update Samsung Galaxy S2 GT-I9100 to Android 4.1.2 XWLST Jelly Bean firmware. 👍

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware

Firmware Info:

Model: GT-I9100
Model name: GALAXY S2
Country: India
Version: Android 4.1.2
Build date: Wednesday, 24 April 2013
Product Code: INU
PDA: I9100XWLST
CSC: I9100ODDLSE
PHONE: I9100DDLS9

Disclaimer:

Install this official Android 4.1.2 XWLST Jelly Bean firmware at your own risk. If you are doing this for the first time and by chance something goes wrong then it might even brick or damage your phone completely. We at droidthunder.com will not be held responsible in such cases. We kindly request you to implement each and every step mentioned below carefully and without implementing anything by your own.

This official Android 4.1.2 XWLST Jelly Bean firmware update must be flashed only on Samsung Galaxy S2 having the model number GT-I9100. Do not try to install this firmware update on any other device or variant (GT-I9100G/P/M/T) as it may result into unwanted outcomes or bricked device. So confirm your device model number from Homescreen–> Menu–>Settings –> About Phone before going ahead.

Screenshots:

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware screenshot 1
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware screenshot 2

Pre-Requisites:

  • Do not proceed further with low battery power. Charge your Galaxy S2 I9100 at least up to 60% as lack of battery power can increase the chances of interruption during the flashing process.
  • Take a complete backup of all your important phone data and settings including your contacts, apps, messages, call logs, memos and APN settings etc. before moving ahead. This is necessary as everything gets wiped out after flashing this firmware update.
  • Install mobile specific drivers on your PC so as to detect your Galaxy S2 I9100 when you connect it to your PC. You can install the drivers from Samsung Kies CD which you’ve got at the time of purchase or just manually install them from link given below.
  1. Download Windows 32 bit x86 drivers.
  1. Download Windows 64 bit x64 drivers.
  • (Optional) Disable all the security tools as well as antivirus that are installed on your computer temporarily. They may increase the risk of interruption during the firmware installation process.

Procedure to install Android 4.1.2 XWLST Jelly Bean firmware on Galaxy S2 I9100

Download files:

  1. Download Odin3-v3.12.7 for Samsung Galaxy S2 I9100.
  1. Download Android 4.1.2 XWLST Jelly Bean firmware for Samsung Galaxy S2 GT-I9100.

Procedure:

Step 1: Download and extract both the above files to a convenient location on your computer. After extracting the firmware package (.zip file), you’ll see these two files in it:

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware files screenshot

The SS_DL.dll file is of no use so ignore it.

Step 2: Switch off your Galaxy S2 I9100 completely until it vibrates.

Step 3: Then you need to boot your phone into downloading mode. For booting into download mode, keep pressing and holding the ‘Home button + Power button + Volume down key’ simultaneously until you see a warning message. As soon as you see the warning message window leave all the keys.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware downloading mode screenshot 1

Step 4: Then keep the phone as it is and connect it to your PC using the micro USB cable. Now just press Volume up button to continue. This will directly land your Galaxy S2 I9100 into downloading mode. Refer the screenshot below.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware downloading mode screenshot 2
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware downloading mode screenshot 3

Step 5: On the PC, launch the downloaded ‘Odin Multi Downloader3-v3.12.7 software which you’ve just received after extraction. As soon as you launch it, the ID:COM section located at the top left corner will turn light blue. Also an Added message will appear in the message box window. This will confirm that your Galaxy S2 I9100 has been successfully connected to your computer.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 1

Note: If such thing doesn’t happen then it’s more likely to be problem with the mobile specific drivers. So just confirm whether you’ve properly installed the mobile specific drivers on your computer or not. You can install them via Samsung Kies or manually install them from the links given in the Pre-Requisites section. If the problem still persists try changing USB cable or the USB port.

Step 6: Next click on the Options tab located on the Odin window and tick the Auto Reboot and F.Reset Time options. Tick only these two options and keep all the other options as they are.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 2

Note: Do not tick the Re-partition option as it may increase the risk of bricking your device.

Step 7: Now, click on the AP button present on the Odin window and browse to the firmware package file which you’ve downloaded (I9100XWLST_I9100ODDLSE_I9100DDLS9_HOME.tar.md5) and select it.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 3

Step 8: Then initiate the firmware flashing process. To do so, just hit the Start button located on the Odin window.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 4

Note: While the process goes on, your phone will boot itself automatically. Do not interrupt the firmware flashing process by disconnecting the micro USB cable from PC.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 5
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 6
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 7
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 8
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 9
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 10
Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 11

Step 9: Be patient and wait until the flashing process completes successfully. It will hardly take few minutes. When the flashing process completes successfully, the ID:COM section on the Odin window will turn green with the message ‘Pass’ on it. Also your Galaxy S2 I9100 will restart itself automatically. This will confirm that the official Android 4.1.2 XWLST Jelly Bean firmware has been successfully flashed on your Samsung Galaxy S2 I9100. Now you can remove the micro USB cable to safely disconnect your phone from PC.

Galaxy S2 I9100 Android 4.1.2 XWLST Jelly Bean firmware Odin screenshot 12

Note: If this process fails or if Odin gets stuck or in case your phone gets stuck into boot loop, then close the Odin window, again go into downloading mode and implement the same procedure as given above.

Also Read: Install Android 6.0 Marshmallow based Cyanogenmod 13 ROM on Galaxy S2 I9100.

Also Read: Install Android 5.0 Lollipop based Cyanogenmod 12 ROM on Galaxy S2 I9100.

Success

Good job! The latest official Android 4.1.2 XWLST Jelly Bean firmware has been successfully installed on your Samsung Galaxy S2 GT-I9100 smartphone. Just navigate to Menu->Settings->About Phone and confirm the same. Enjoy the Android Jelly Bean features on your Galaxy S2. Also do share your view and experience after using it. Finally if you have any issues, suggestions or problems while going through this process, then feel free to inform me through the comments section given below. I’ll be happy to help you guys. Till then enjoy and peace out!✌