For Samsung Galaxy S2 GT, I9100 model, a new Firmware has been released in OTA, the new Android Jelly Bean 4.1.2 OTA update. If you didn’t receive this latest Android 4.1 stock update in the OTA, and you want to improve your S2 device with the same, you should follow our manual method to update the device.
To install the official Android 4.1.2 Jelly Bean firmware (UHMS9) on the Galaxy S2 GT I9100 device, you should use the instructions very minutely. But before doing so you should keep in mind that this doesn’t offer big changes in the features but comes to resolve the previously reported bugs only.
Apr 12, 2013 Samsung Galaxy S2 I9100G variant of one of the most popular Android phones can now be updated to CM10.1 M3 ROM with Android 4.2.2 Jelly Bean. Milestone 3 brings several new features to CyanogenMod 10.1 and is a lot more stable than any of the releases before.
This UHMS9 latest update is a more stable version of the JB 4.1.2 OS for your Samsung Galaxy device and you’ll be able to enjoy updates for a few applications and programs that you are using constantly.
This update can be installed only for the unlocked Samsung S2 I9100 devices. You can install the Android Jelly Bean 4.1.2 by OTA or by using KIES app for your device or you can flash it manually. So, this present article will show you a tutorial guiding you how to install this update manually on your S2 device.
This manual installation for the latest official Android 4.1.2 OS can be applied for the S2 owners that have a rooted smartphone. The OTA procedure isn’t supported by the smartphones that have an unlocked and rooted OS. To conclude, if you are running in your device a custom ROM firmware, this guide is necessary, if you want to update your device.
If your device’ warranty was voided, when you’ve installed the custom ROM, you’ll be able to restore it, but you’ll lose the root rights and the unlocking bootloader will be revoked.
Pre-requisites and Guidelines:
This tutorial and all the instructions listed here are compatible and can be applied only with the Samsung Galaxy S2 model number GT I9100. So, don’t apply the same on any other device otherwise be ready for the consequences.
You need your smartphone, original USB cable and a windows PC to complete this guide.
Deactivate or uninstall all the security applications and the settings, which can interrupt the flashing process or can interfere with Odin. Turn off the antivirus and the firewall apps protections on both devices, your S2 and on PC.
Back-up all your Samsung Galaxy S2 data store in the internal device’ memory, before proceeding the flashing new ROM OS data like SMS, contacts, call logs, applications, EFS, any images files and videos files, documents and so on.
If you’ve installed a custom Recovery image, make a Nandroid back-up for your actual running ROM.
Download the Samsung KIES on your PC, and install the compatible drivers for your Samsung Galaxy S2 device;
From your S2 menu go to Settings -> Applications -> Development -> USB debugging and enable the USB debugging option.
Verify your device’ battery and be sure you have more than 70 % power left in it. Otherwise your device may be forced to shut down during the installation process. This may damage your device as well.
Be sure you read all the instructions and all the steps and you’ll apply in the correct order.
This article and all instructions listed here are only for educational or instructional purpose, and we can’t be blamed or held responsible for any data loss or damage to your device. Do it at your own risk.
How to Update Galaxy S2 GT I9100 to Official Jelly Bean 4.1.2 UHMS9 OS
Firstly, download the JB 4.1.2 UHMS9 ROM update file from here and save it in your Computer.
Secondly, download the Odin application and save it in your PC
Now, extract the downloaded update file on your PC and install the Odin software.
Open the Odin app.
Turn off the S2 smartphone.
Reboot the Samsung Galaxy S2 device into download mode. To do this, you’ll need to press on Volume Down, Center and Power buttons simultaneously.
Now, when your device is in Download mode, connect the smartphone to the PC using the original USB cord.
On Odin software verify if the ID: COM section is yellow or blue and the “added” message is visible. Note: In case these settings are not like above, you need to close the Odin application, disconnect the smartphone from the PC by removing the USB cord and after that re-install the S2 proper drivers on the PC. After you have done this, repeat the steps.
From the ODIN’s app interface select “PDA” option and search and pick the.tar file.
If there are more files on the extracted downloaded folder package click on: “CSC” and load the CSC file; on “PHONE” field search and pick the Modem file; on the “PIT” field, search and pick the .pit file.
Now after you pick all the updating package files, click on “Start” from the ODIN and wait to install the latest Android 4.1.2 UHMS9 OS on your Samsung Galaxy S2 device.
When the flashing process completes on the Odin app one “pass” message will be showed.
Now, disconnect the S2 device from the PC
Reboot your smartphone.
Note: If during the flashing process, you couldn’t apply the procedure, and the Odin get stuck, you have to: close the Odin software and after that to disconnect your device by removing the USB cord, restart your Samsung Galaxy S2 device with a forced restart, and after this you should to re-install the proper drivers. Now, repeat the procedure from the start to finish.
After you have finished the procedure and your device at the first boot gets a boot loop, you have to: stop your smartphone with a power off, after that reboot it into the recovery mode and from there select “wipe data factory reset” & “wipe cache partition” after you wipe the data select “+++go back+++” and at the end, select “reboot system now”.
That’s all! These are all steps that you need to follow in order to successfully complete updating your Samsung Galaxy S2 GT I9100 with the latest official Android 4.1.2 Jelly Bean UHMS9 OS firmware.
After you enter in the new Android 4.1.2 version on your S2, let us know about its performances, and share with us your impressions in our comment section. We are eager to know your feedbacks. Happy Reading!
Hey folks! There is good news for you all. Now update your Samsung Galaxy S2 to Official Jelly Bean 4.1.2 XWL SJ OS. We have brought to you a step-by-step guide which will help you to install this Firmware.
The XWLSJ firmware update is the latest update that the Samsung officially launched for the Samsung Galaxy S2 I9100 devices. This latest ROM update can be installed in your device by OTA or by using the KIES app for your S2 device.
If you didn’t receive the notification to install this update by OTA, and if you wish to have it, we can help you to install it manually and to do this we have brought for you this tutorial.
Android Jelly Bean 4.2 Download For Galaxy S2 Pro
This latest Android 4.1.2 ROM. Jelly Bean OS is the most stable version that the Jelly Bean platform has for the moment. In this version, all the bugs and issues reported in the previous JB versions have been solved and in addition to it, come some new features.
Follow this instruction carefully. Neither skip any step nor mix up the order. This present tutorial doesn’t require having a rooted S2 device before starting the procedure. In case you have a rooted S2 smartphone and you want to apply this update, you need to know that the root access will be revoked after the installation of official Jelly Bean 4.1.2 XWLSJ OS on your device. For re-root your device, you need to use a root method that is suitable with this new Jelly Bean 4.1.2 XWLSJ OS Firmware.
Pre-requisites and Guidelines:
This tutorial and all the instructions listed here, are only for educational and instructional purpose, so use the same only at your own risk. Our team can’t be held responsible or liable for any change that may occur to your smartphone during the installation process.
This tutorial and the instructions listed here are only for the Samsung Galaxy S2 model number GT I9100. Don’t use this tutorial for any other device.
For the firmware installation, use the ODIN app. A custom Recovery image installed on your device is not required. In case you have a custom Recovery image installed on your device, it is recommended (optional) to perform a wipe before using ODIN for flashing this new JB 4.1.2 update. (To do that, boot your S2 into recovery image mode and from there select “wipe data factory reset” and then “wipe cache partition”).
Back-up all your personal data before starting the update procedure. I recommend you to save your personal information like SMS, call logs, applications, EFS folder internet settings, images, videos, and other data that you consider you need.
You need a Windows PC with internet access available on it, the original USB cable for S2 device, and your S2 device to implement this tutorial.
Disable or deactivate the security applications that you’re running on your computer and on your smartphone. Programs like antivirus, firewall normally interfere with the flashing process.
Verify your device’ battery and make sure the level is more than 70%.
Enable the USB debugging option on your Samsung Galaxy S2 device. To do that you need to follow the next path: “Settings -> Applications -> Development -> USB debugging and to activate this option.
Update Galaxy S2 GT I9100 to Official Jelly Bean 4.1.2 XWLSJ OS- Guide
Android Jelly Bean 4.2 Download For Galaxy S2 2
Download Samsung KIES from here, and install the proper drivers for your Samsung Galaxy S2 device. If you already have installed the compatible drivers, you can skip this step.
Download the ODIN app from here and install it on your PC
Download the Official Jelly Bean 4.1.2 XWLSJ OS update file from here and extract the same in your PC.
Open ODIN application from your computer.
Power off your S2 device and reboot the same into Download Mode. To do this reboot the device by pressing and keeping the Power and Volume buttons simultaneously.
Connect your S2 device to the PC using the USB cable.
In the ODIN app, you need to be notified with the ID:COM yellow or blue and the “added” message is displayed and available. That gives you the accord to begin the flashing process. If not, close ODIN, after that disconnect your S2 device from the computer and reinstall the drivers again in your PC. After you reinstall the drivers, repeat the procedure from the beginning.
Now, from the ODIN app select the “PDA” option.
Search and pick the downloaded update, which you downloaded and extracted previously.
Now, in the ODIN app click on “Start” button.
Now wait until the flashing process is done and you’re notified by a “pass” message in the ODIN app interface.
Disconnect your S2 device by removing the USB cable.
Reboot your Samsung S2 device.
Note: if your device gets a boot loop at the first reboot with the new updating ROM, you have to reboot it, and after that to enter in the Recovery Mode, you can do that by pressing on the Volume Down and Power buttons simultaneously. Now, from the Recovery Mode select “wipe data factory reset” and followed by “wipe cache partition” option. After you performed a wipe cache partition, return to the Recovery Mode main menu and from there select “reboot system now”.
Android Jelly Bean 4.2 Download For Galaxy S2 Free
Note: If the ODIN app gets stuck, close the ODIN app and disconnect your device from the computer by removing the USB cord, and force a restart for your device. After you’ve restarted your device, reinstall its proper drivers on the PC and repeat the update guide from the beginning.
Android Jelly Bean 4.2 Download For Galaxy S2 1
Congratulations! That’s all! The manual update is over now. You can use our comment section at the bottom, if you need supplementary information to understand this procedure.