Install Official Android 2.3.6 XWKL1 Firmware On Samsung Galaxy S2 (Only for those who are not satisfied/having problem with ICS)


This firmware and the guide below is compatible only and only with Galaxy S2, model number i9100. It’s not compatible with any other device, including US variants of S2, the Epic 4G Touch, T-mobile Galaxy S2 and AT&T Galaxy S2 along with Skyrocket. Check your device’s model number in Settings » About phone.


The methods and procedures discussed here are considered risky and you should not attempt anything if you don’t know completely what it is. If any damage occurs to you or your device, we won’t be held liable — you only will be responsible, you’ve been warned!

Pre-Installation Requirements/Tips

1. This procedure will wipe all your apps, data and settings (but it will NOT touch your SD cards, so don’t worry about those). Backup your Apps and important data — bookmarks, contacts, SMS, APNs (internet settings), etc.

2. If you have Samsung’s PC software Kies installed, un-install it first because it may interrupt the flashing process.

3. Drivers! — it’s important you’ve the proper drivers installed. Download links below.
32 bit (x86) Windows | 64-bit (x64) Windows

4. Download the official Android 2.3.6 XWKL1 Indian firmware from here. The password of the zip file is ‘’ without quotes.
Download Here

5. Now, download the Odin software
Download Here
Filename: Odin3 v1.83.exe

6. Power Off your phone and also disconnect it from PC if it’s connected, and don’t forget to keep phone’s battery above 50%, just to be very very safe. After the screen goes off, wait for vibration to confirm complete switch off.

7. Boot Galaxy S2 into Download Mode . For this, press and hold these keys together:Volume Down + Home + Power, you’ll get a Warning! screen.. press Volume up to continue to enter download mode.

8. Open Odin (from step 3) — double-click the Odin3 v1.83.exe.

9. Connect your phone to PC now. You should get the message “Added! !” under Odin’s message box in the bottom left. If you don’t get this message, then probably there is a problem with drivers. Make sure you’ve proper drivers installed. See point 3 above under Pre-Installation Requirements.

10. Now, in the PDA tab in Odin, select the file you got in step 4 i.e I9100XWKL1…_Home.tar.md5.tar.md5.

Important! Do not touch any other button or make any other changes in Odin except selecting the required file as given in step 8. Your Odin’s screen should look like this:

11. Now, hit the START button to start flashing firmware. When the flashing procedure is finished, your phone will automatically reboot — and when you see the Samsung logo, you can safely unplug the cable. Plus, you’ll get a PASS (with green background) message in the left-most box at the very top of the Odin. Screen would look like this (below) on successful flashing of firmware.

IMPORTANT NOTE: If ODIN gets stuck at some stage and doesn’t get you PASS, do this — disconnect the phone from the PC, close ODIN, remove battery, re-insert it, turn phone on in Download mode again, and do the procedure again from Step 6. Same if you get FAIL in Odin.

12. After you’ve got the PASS message, the phone will probably get stuckat S logo. If it reboots fine without getting stuck at the S logo, then okay, you’re done, skip to next step. Otherwise, worry not and do this:

a) Boot to recovery mode — for which, first power off phone and after screen goes off, wait for 5-6 seconds, and then press and hold Home + Volume Up + Power keys together. Once you are in recovery mode, use volume keys to move the selection up and down and power or home key to select the option.

b)Go to Factory Reset and select it. Select Yes on next screen.

c)Now, go to Wipe Cache and select it. Confirm Yes on next screen.

d)Now, select reboot system now to boot your Galaxy S2. It will boot up fine. And you’ll have Android 2.3.6 I9100XWKL1, firmware on your Galaxy S2 i9100. Go to Settings and scroll down and select About Phone and check the info there.

13. Also, if data network (3G, GPRS, etc.) isn’t working for you, you gotta fill in APN Settings meant for your carrier in Mobile and Network settings. Here’s a full list of carriers and their APN settings » Link

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