How to Install Official Indian ICS 4.0.3 Firmware in Samsung Galaxy S2 GT I9100

Sanjana March 26, 2012 0

It’s a good day for Indian users of Samsung Galaxy S2 GT I9100 as they will be witnessing the official ICS firmware via

KIES. Users on beta or custom firmwares will not receive the official update via KIES since it won’t recognize the device on beta or custom ROM firmwares. Thus users on beta or other custom firmwares need to apply this update manually by following the procedures discussed here.

galaxy s2

You do not require your Galaxy S2 smartphone to be rooted prior to applying this update. Users can proceed with this update even after applying this update. If your device is rooted from before then the rooting access will get cancelled after applying this update.

We wont be responsible for any harm caused to your device during the updation procedure that is unlikely to happen if you follow the instructions carefully. The updation procedure is not recommended for basic users but is for advanced users and is only applicable to Samsung Galaxy S2 I9100 smartphones that are network unlocked. Do not apply it in any other device as it might not be reversible and may harm the device by blocking it.


Backup all the user data present in your phone since chances of data loss or corruption are there. Having a backup will help you to replace the lost data if any damage occurs. Follow the link posted below to backup and restore all your data easily.

Pre Upgrade Instructions for Rooting and Firmware Update

Must Have:

Download Official Indian ICS 4.0.3 Package

Steps to Update Official Indian ICS 4.0.3 Firmware in Galaxy S2:

Step-1: Enable USB Debugging Mode in your phone from the path “Settings > Applications > Development > USB Debugging” and make sure to tick the option of USB Debugging.

enable usb debugging

Step-2: Download ICS Package from the Must Have section to your computer and extract it. Match the extracted files with the image given below and if a single file is found missing then check with the downloading and extraction again.

official indian ics update

Step-3: Open Odin from the extracted files and power off your smartphone to enter into Download mode by pressing Volume Down key+ Center button and holding both, simultaneously press Power button. A green robot will be displayed indicating that the device has entered into Download mode successfully. If the device boots into Normal mode then re-try to enter into Download Mode by the same process till you are finally there.

update galaxy s2

Step-4: Once you enter into download mode connect your phone to the computer via USB Cable while keeping the ODIN opened. Now the drivers will get installed and ID: COM will turn yellow indicating that you can now proceed to the next step. If the device does not get connected then navigate to the path “Settings > Wireless and network > USB Settings” then select Samsung KIES option and connect the phone to the computer to make ID : COM turn yellow.

update galaxy s2

Step-5: If the ID : COM section still doesn’t turn yellow, then install Samsung USB Drivers, .NET framework and update KIES with the latest version to install the missing drivers. Do not proceed to the next step if your phone refuses to enter into Download Mode in spite of repeated attempts.

Step-6: Click on the PDA tab in Odin, and select the file mentioned below


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– GT-I9100_INU_I9100XXLPQ_I9100ODDLP7_I9100DDLP8.tar.md5

update galaxy s2

Now tap on “Start” to initiate the firmware updation process that will proceed in the following way as mentioned below.

Enter CS for MD5..
Check MD5.. Do not unplug the cable..
Please wait..
GT-I9100_INU_I9100XXLPQ_I9100ODDLP7_I9100DDLP8.tar.md5 is valid.
Checking MD5 finished Sucessfully..
Leave CS..
Odin v.3 engine (ID:9)..
File analysis..
Get PIT for mapping..
Firmware update start..
All threads completed. (succeed 1 / failed 0)

Step-7: After the firmware is successfully applied, it will restart on its own. When you see the home screen, disconnect the USB Cable and power off the phone to enter into Recovery Mode. The Recovery mode can be entered by pressing Volume up key +

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Ok button and holding both press the Power button simultaneously .

Step-8: In Recovery mode, select the options of “Wipe data/factory reset > Wipe Cache partition” then choose “Reboot system now” option to reboot your device with the help of Volume rocker keys. If the device boots normally then re-try to enter into Recovery mode.

reboot system now

In case the process gets interrupted somewhere in the middle then re-apply the entire process again from the beginning. You can now restore the back up taken in the initial steps. Thus you can easily update your Samsung Galaxy S2 smartphone with the latest Android 4.0.3 version by following the steps mentioned above carefully.

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