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Good News! Now you can Update Samsung Galaxy S2 GT I9100 With Android 4.1.2 JellyBean Official firmware. The update is not going to add any extra features to the Galaxy S2 but it packs Better Ram utilization, Battery tweaks, updated stock apps and few other bug fixes. So, if you are waiting for Kitkat update for Samsung Galaxy S2, this update would be a breather. Further, it is an official update by Samsung and you need not worry about losing the manufacturer’s warranty.
So, are you ready with your device? Go through the list of prerequisites before you get into the tutorial to safeguard your personal data and phone’s operating system.
Prerequisites
Samsung USB Drivers
The phone is to be connected with a PC to flash the firmware package. For the PC to detect your phone, you should install Samsung USB drivers. If you have already installed them, ignore this message. Else, go through the below link to download Samsung USB Drivers.
Get Samsung USB Drivers
Backup Important Data
It is great thing that you are done with installation of USB drivers. We know, it is mandatory to make a backup of important data on phone before we root/install ROMs. It may be an official or unofficial update, if anything goes wrong during installation, it wipes the entire data. So, backup is recommended while updating an Android phone. If you are not sure about what to backup and how to backup? take a look below:
Backup Apps, Wanna know how? Check this >> How To Backup Android Apps ?
Backup SMS Messages, Wanna know how? Make use of SMS Backup & Restore App
Backup Contacts, Mail data, Google Data, Wanna know how?, Just sync them with Google Sync.
Backup Call Logs, Wanna know how? Make use of Call Logs Backup & Restore Android App
Backup phone settings like Access Points, GPRS Settings, Connectivity Settings. Wanna know how? Note them on a paper or something.
Few More Prerequisites
You have already installed USB drivers on your computer. Even though if your phone fails to detect the PC, make sure that whether you have enabled USB debugging on your Android phone. The path to enable it varies for different versions of Android operating systems like Jelly Bean, Ice Cream Sandwich, Gingerbread.
Double check your device model before you get started with the installation. If you install non compatible ROM on your phone, it may brick the operating system. So, make sure that your phone model matches with the model we mention in the article.
Make sure the phone’s battery is at least 75% full to ensure that it should not run out of battery while installing the ROM.
Download all the required files listed in the downloads section and keep them in a folder to be handy for you.
If you have completed all the above steps, you can now continue with installation process which is a bit typical. Make sure that complete every step in an orderly manner.
Downloads Required
Download Android 4.1.2 JellyBean Package
ODIN v3.09
How To Update Samsung Galaxy S2 GT I9100 With Android 4.1.2 JellyBean Official firmware ?
Things to remember
Disclaimer: The Custom ROM’s, Firmware, Software, Applications, Mods and any other tools shared/mentioned in this article belongs to their respective developers. Neither our team nor the developers are responsible to any losses that occur to your device while installation. So, you are suggested to continue with the tutorial at your own risk. Think before you act.
Warning: Make sure that you double check the model name/number we mention in the article. Attempting to install the firmware on any other model may brick the OS.
Step-By-Step Tutorial
Step 1: Download Android 4.1.2 JellyBean package from the downloads section to your PC and unzip the file.
Step 2: Download ODIN v3.09 from the downloads section to your PC.
Step 3: Turn off your device and enter the OS download mode by pressing and holding Home+Power+Volume Down Buttons. Press the Power button again to confirm entering into download mode.
Step 4: Once the phone enters the download mode, launch ODIN on computer and connect the phone to PC using a USB cable. If the connection is successful, you can see one of the ID:COM section turns Green.
Step 5: You have to choose the firmware files to be flashed on the phone. Follow the below steps to choose them:
Click on PDA and choose the file with word CODE in its name.
Click on Phone and choose the file with word MODEM in its name.
Click on CSC and and choose the file with word CSC in its name.
Click on PIT and choose .pit file.
Ignore any of the above step if you didn’t find any such files.
Make sure that you use the latest version of ODIN i.e., ODIN v3.09.
Step 6: In the ODIN interface, make sure you check Auto Reboot and F:Reset options. Also check Re-Partition option if you choose PIT file from the package.
Step 7: Once you are done, click Start button in the ODIN. The ODIN starts flashing the firmware on the phone which takes some time.
Step 8: After few minutes, the installation completes rebooting the phone and a PASS! message appears on the ODIN screen. Once the home screen appears, you can unplug the device from the USB.
That’s all! You’ve successfully updated your Samsung Galaxy S2 GT I9100 with Android 4.1.2 JellyBean official firmware.
To check whether the Android firmware is updated, go to Settings>>About Phone, there you can find the firmware version as Android Kitkat 4.4.2.
If you face any problems during installation, feel free to drop your words in the comments section. We will be glad to help you.
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