Edit and Update Galaxy S2 Firmware

5 Parts:

Install Android 4.1.2 XWLSS Jelly Bean Firmware on the Galaxy S2

Update T-Mobile Galaxy S2 to Android 4.1 to install Android 4.1 Jelly Bean on Galaxy S2 "Hercules"

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There are tips and and tricks on how to update Galaxy S2 Firmware to get the better enhancement. Get the improved features and enjoy more from your phone. Samsung has made advances to its Jelly Bean firmware. From being Android 4.1.2 XWLSN, Jelly Bean firmware for Galaxy S2 19100 Samsung has now released the Android XWLSS. The manual for download and installation of the latest firmware is now available, credited by renowned XDA Recognized developer and Contributor SamMobile (to provide the download link) and Faryaab (for uploading the link). The release of the firmware is exclusively for the Europe region only, including the Nordic countries. The firmware is unbranded, has no useless apps, and is bloatware-free.

1. 1
   Download Android 4.1.2 XWLSS Jelly Bean firmware for Galaxy S2 on your PC and extract the zip file.

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2. 2
   Download ODIN, which is required for installing the official firmware on your device.

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3. 3
   Switch off the device and restart it into Download Mode through pressing and holding Home and Power buttons and Volume Down, until the Android robot icon with a triangle displays on the screen

   .

   Then press the Power button again to verify progress into Download Mode.

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4. 4
   Open ODIN on the PC and connect the phone unto it while the phone is on Download Mode.

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5. 5
   When the phone is connected, one of the ID

   :

   COM boxes will appear yellow along with the COM port number. This process may be take five to seven minutes to complete.

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6. 6
   Select the files that require being installed or flashed on the phone, that can be found among the extracted files in Step 1.

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7. 7
   Click the 'PDA' checkbox and select the file name '.md5' or '.tar'.

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8. 8
   Tap the "Phone" checkbox and select the file name 'MODEM'

   .

   Ignore if the file is missing.

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9. 9
   Click the 'CSC' checkbox and choose the file name 'CSC'

   .

   Ignore if the file does not exist.

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10. 10
    Click the 'PIT' checkbox and choose the .pit file

    .

    Ignore if the file is nonexistent.

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11. 11
    In ODIN, activate F

    .

    Reset Time and the Auto Reboot option by clicking the checkboxes. The Re-Partition option must be clicked only if a .PIT file is selected in the previous step.

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12. 12
    Once the firmware is installed, the Galaxy phone will automatically restart

    .

    Lastly, when the home screen displays, disconnect the Galaxy S2 phone from the computer.

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13. 13
    And Samsung Galaxy S2 19100 is now successfully updated to Android 4.1.2 XWLSS firmware update

    .

    To verify the installation of firmware version, go to "Settings", and then "About Phone". To Galaxy users who want to try the firmware but are not a supported carrier or are located in non-European countries, they should try to change their country's CSC code as given as follows. Directions for manually changing the CSC code to your country (non-European regions):

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14. 14
    Download Samsung Galaxy S/S2 CSC app from Google Play Store.

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15. 15
    Launch Samsung Galaxy S/S2 CSC app.

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16. 16
    Press Change CSC button.

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17. 17
    Choose the CSC for your country.

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18. 18
    Press Install button (be reminded that changing CSC wipes APN, package customization and carrier related data on your device).

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19. 19
    European Galaxy S2 users may also try to update their CSC code to be compatible with their country, if they are having issues with receiving official updates through OTA or Samsung Kies

    .

    The procedure enables the user to change the CSC code of the phone and install the firmware from a different region.

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For Jelly Bean JZ054K in Galaxy S2:

1. 1
   Unzip the file.

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2. 2
   Then launch ODIN 3.04 or 1.85.

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3. 3
   Reboot the phone in download mode (Home + Power + Volume Down)

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4. 4
   Connect the phone and wait until a yellow sign in ODIN appears.

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5. 5
   Add I9100XXLSJ_ I9100OXXLS1_I9100XXLS6_HOME.tar to PDA.

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6. 6
   Add phone/modem file.

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7. 7
   Add CSC.

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8. 8
   The re-partition must ticked if pit file has been selected.

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9. 9
   Start flash, and wait for few minutes.

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10. 10
    Features to expect are:

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11. 11
    Samsung's Cloud services

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12. 12
    Smooth buttery performance and nice stability (credits from Project Butter)

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13. 13
    New TouchWiz Nature UX (Similar UI with that of the Galaxy Note II and Galaxy S III)

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14. 14
    New widgets form the Galaxy S III

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15. 15
    Direct call, pop-up play and smart stay features

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16. 16
    Two home screen modes

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17. 17
    Google now

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18. 18
    New notifications bar

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Firmware Details:

• Android Version: 4.1.2 - JZ05K (Jelly Bean)
  
• CSC: I9100OXXLS1
• PDA: 19100XXLSJ
• Changelist: 462349
• MODEM: I9100XXLS6
• Build Date: 6th November 2012

The directions are as follows:

1. 1
   Download install Samsung Kies to your Mac or Window PC

   .

   The entire instructions can be seen here.

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2. 2
   Scroll through the Kies icon and open the application.

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3. 3
   Plug the micro USB cable into the USB end and T -Mobile S2 to your computer.

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4. 4
   Wait for Samsung Kies to identify the device.

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5. 5
   Kies will prompt a software update telling it is ready for your device

   .

   Click Update to start the process.

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6. 6
   Now choose Allow Saving, and then Start Upgrade.

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7. 7
   Kies will install the update automatically

   .

   After several minutes a pop-up will appear, telling that the software upgrade is complete. And then your device will probably restart.

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8. 8
   And you're done

   .

   You have completely installed Android 4.1 Jelly Bean on your T-Mobile Galaxy S2.

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• XWLSS official firmware and directions given are limited to the international variant Galaxy S2 19100 model only and cannot work on other devices. Confirm the device's model number by going to "Settings" then "About phone".
• Back up important settings and data on phone using one of the custom recovery tools such as TWRP or ClockworkMod (CWM), and it produces a complete image of the existing phone setup.
• The phone must have a minimum of 80 percent of battery charge to avoid unexpected phone shutdown (due to empty battery) while installing the firmware, as this will damage or brick the phone.
• Verify that the right USB drivers are installed in the phone for the computer. Download Samsung Galaxy S2 19100 USB drivers.
• Ensure that USB debugging mode is activated on the phone by going to "Settings", then "Developer Options" if the phone is running on Android 4.0 or later, or Settings > Applications > Development (if the device is running on Android 2.3 or earlier.
• Make sure the phone is not rooted. Download Root Checker app. Unroot the device first (if it is already rooted) before proceeding with the installation of firmware.
• Check if the phone is factory unlocked (means not locked to a specific carrier) and have installed CWM recovery.

It has 2.3.5 OS and I am going to attempt to update that to 4.1.2, which is the xwlss?

GT I-9100 has the Android version 2.3.5 on it and I would like to flash it with 4.1.2

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