How to Update Samsung Galaxy S2 to Android 4.1.2 Jelly Bean

How to update the Samsung Galaxy S2 to Android Jelly Bean

Samsung Galaxy S2 GT I9100 was the most beloved smartphone of 2012 with ultimate features and specifications. However, it is in the top 15 list of best android smartphones of 2013 also.

Samsung has not yet approved the international warranty scheme. So, it has been a problem for many customers and users of Samsung Galaxy S2 who bought it from foreign countries. Service centers of Samsung completely refuse to accept the warranty of international smartphones of Samsung.

So, they charge for everything what so ever if your Samsung smartphone is in warranty or not.

Few months ago, Samsung revealed the “Android 4.1.2 Jelly Bean” update for Samsung Galaxy S2 which brings this smartphone to a brand new level.

Some Android 4.1.2 Jelly Bean updates feature:

  • Better speed
  • Advanced interface
  • Smart Stay
  • Professional look
  • User-friendly interface
  • Multiple home screens
  • Google Now
  • Dropbox storage (50GB)

And much more…

Many of my readers asked me how to update the Samsung Galaxy S2 to Android 4.1.2 Jelly Bean as service centers charge for the update if there is no warranty period left.

So, here I am about to discuss “How to manually update your Samsung Galaxy S2 GT I9100 to Jelly Bean at home”.

Step by step guide how to Install Jellybean on  Galaxy S2:

NOTE: Please be sure to charge your battery level full and backup your data before updating it.

Step 1. Download zipped “Android 4.1.2 Jelly Bean” into your computer and after downloading it, extract it


Step 2. Download ODIN v3.07 and extract it, this is must required to update your Samsung Galaxy S2 to Jelly Bean


Step 3. Switch off your phone (wait until it shut down completely)

Step 4. After switching off, press VOLUME DOWN + HOME + POWER buttons together until an Android robot sign with triangle appears on the display (this is called the DOWNLOAD MODE)

Step 5. As you have extracted the ODIN v3.07 is step 2, launch it now as an ADMINISTRATOR

Step 6. Now, connect your Samsung Galaxy S2 to the computer via USB cable (if it is successfully connected to the computer, the ODIN will show message “Added!”)

NOTE: If it does not show “Added” message try another port of your computer.

Step 7. Now return to step 1 downloaded firmware of Android 4.1.2 Jelly Bean

  • Select PDA checkbox and click on the .tar.md5 file
  • Click on Phone checkbox and select “modem” named file (ignore if it is not found)
  • Click on CSC checkbox and click “CSC” named file (ignore if it is not found)
  • Click on PIT checkbox and click “.pit” named file (ignore if it is not found)

Step 8. Now, return to ODIN and be sure to enable AUTO REBOOT and F. RESET TIME boxes

NOTE: If you have chosen “.pit” file in step 8 then be sure to enable Re-partition checkbox in ODIN also otherwise. Please be sure for above two steps to check again before updating if everything is done fine or not.

Step 9. Now, hit the START button to starting flashing your Samsung Galaxy S2 and updating it.

Step 10. As soon the firmware will be successfully complete; the ODIN will show a PASS message with a green background.

Step 11. Now, disconnect the phone from computer (remove USB cable)

Finally your Samsung Galaxy S2 is running on Android 4.1.2 Jelly Bean.


In any case if your smartphone stuck on startup (Samsung logo) after final step then,

  1. Press VOLUME UP + HOME + POWER button together to go to RECOVERY MODE
  2. Then, choose Wipe data/Factory reset and also Wipe Cache Partition
  3. Then choose REBOOT SYSTEM NOW option

NOTE: Use volume up and down key to navigate and POWER key to select option

I hope every point is clear enough. In any case if you face any problem or confusion. Simply COMMENT below and I will reach to you as soon as possible with preferred solution.


Aly Chiman

Aly Chiman is a Blogger & Reporter at which covers a wide variety of topics from local news from digital world fashion and beauty . AlyChiTech covers the top notch content from the around the world covering a wide variety of topics. Aly is currently studying BS Mass Communication at University.